diff --git a/CHANGELOG.md b/CHANGELOG.md
index d7bf54d21..a8d1cb7ff 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+<a name="0.8.26"></a>
+## [0.8.26](https://github.com/angular/zone.js/compare/v0.8.25...0.8.26) (2018-04-08)
+
+
+### Bug Fixes
+
+* **test:** fix [#1069](https://github.com/angular/zone.js/issues/1069), FakeDate should handle constructor parameter ([#1070](https://github.com/angular/zone.js/issues/1070)) ([b3fdd7e](https://github.com/angular/zone.js/commit/b3fdd7e))
+
+
+
 <a name="0.8.25"></a>
 ## [0.8.25](https://github.com/angular/zone.js/compare/v0.8.24...0.8.25) (2018-04-04)
 
diff --git a/dist/fake-async-test.js b/dist/fake-async-test.js
index c9893b691..9bc27674e 100644
--- a/dist/fake-async-test.js
+++ b/dist/fake-async-test.js
@@ -18,17 +18,40 @@
  * Use of this source code is governed by an MIT-style license that can be
  * found in the LICENSE file at https://angular.io/license
  */
+var __read = (undefined && undefined.__read) || function (o, n) {
+    var m = typeof Symbol === "function" && o[Symbol.iterator];
+    if (!m) return o;
+    var i = m.call(o), r, ar = [], e;
+    try {
+        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
+    }
+    catch (error) { e = { error: error }; }
+    finally {
+        try {
+            if (r && !r.done && (m = i["return"])) m.call(i);
+        }
+        finally { if (e) throw e.error; }
+    }
+    return ar;
+};
+var __spread = (undefined && undefined.__spread) || function () {
+    for (var ar = [], i = 0; i < arguments.length; i++) ar = ar.concat(__read(arguments[i]));
+    return ar;
+};
 (function (global) {
     var OriginalDate = global.Date;
     var FakeDate = /** @class */ (function () {
         function FakeDate() {
-            var d = new OriginalDate();
-            d.setTime(global.Date.now());
-            return d;
+            if (arguments.length === 0) {
+                var d = new OriginalDate();
+                d.setTime(FakeDate.now());
+                return d;
+            }
+            else {
+                var args = Array.prototype.slice.call(arguments);
+                return new (OriginalDate.bind.apply(OriginalDate, __spread([void 0], args)))();
+            }
         }
-        FakeDate.UTC = function () {
-            return OriginalDate.UTC();
-        };
         FakeDate.now = function () {
             var fakeAsyncTestZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
             if (fakeAsyncTestZoneSpec) {
@@ -36,11 +59,17 @@
             }
             return OriginalDate.now.apply(this, arguments);
         };
-        FakeDate.parse = function () {
-            return OriginalDate.parse();
-        };
         return FakeDate;
     }());
+    FakeDate.UTC = OriginalDate.UTC;
+    FakeDate.parse = OriginalDate.parse;
+    // keep a reference for zone patched timer function
+    var timers = {
+        setTimeout: global.setTimeout,
+        setInterval: global.setInterval,
+        clearTimeout: global.clearTimeout,
+        clearInterval: global.clearInterval
+    };
     var Scheduler = /** @class */ (function () {
         function Scheduler() {
             // Next scheduler id.
@@ -50,7 +79,7 @@
             // Current simulated time in millis.
             this._currentTime = 0;
             // Current real time in millis.
-            this._currentRealTime = Date.now();
+            this._currentRealTime = OriginalDate.now();
         }
         Scheduler.prototype.getCurrentTime = function () {
             return this._currentTime;
@@ -309,12 +338,26 @@
             }
             global['Date'] = FakeDate;
             FakeDate.prototype = OriginalDate.prototype;
+            // try check and reset timers
+            // because jasmine.clock().install() may
+            // have replaced the global timer
+            FakeAsyncTestZoneSpec.checkTimerPatch();
         };
         FakeAsyncTestZoneSpec.resetDate = function () {
             if (global['Date'] === FakeDate) {
                 global['Date'] = OriginalDate;
             }
         };
+        FakeAsyncTestZoneSpec.checkTimerPatch = function () {
+            if (global.setTimeout !== timers.setTimeout) {
+                global.setTimeout = timers.setTimeout;
+                global.clearTimeout = timers.clearTimeout;
+            }
+            if (global.setInterval !== timers.setInterval) {
+                global.setInterval = timers.setInterval;
+                global.clearInterval = timers.clearInterval;
+            }
+        };
         FakeAsyncTestZoneSpec.prototype.lockDatePatch = function () {
             this.patchDateLocked = true;
             FakeAsyncTestZoneSpec.patchDate();
diff --git a/dist/jasmine-patch.js b/dist/jasmine-patch.js
index 2b69773c8..33e809a72 100644
--- a/dist/jasmine-patch.js
+++ b/dist/jasmine-patch.js
@@ -76,42 +76,48 @@
             return originalJasmineFn.apply(this, arguments);
         };
     });
-    if (enableClockPatch) {
-        var originalClockFn_1 = (jasmine[symbol('clock')] = jasmine['clock']);
-        jasmine['clock'] = function () {
-            var clock = originalClockFn_1.apply(this, arguments);
-            var originalTick = (clock[symbol('tick')] = clock.tick);
+    // need to patch jasmine.clock().mockDate and jasmine.clock().tick() so
+    // they can work properly in FakeAsyncTest
+    var originalClockFn = (jasmine[symbol('clock')] = jasmine['clock']);
+    jasmine['clock'] = function () {
+        var clock = originalClockFn.apply(this, arguments);
+        if (!clock[symbol('patched')]) {
+            clock[symbol('patched')] = symbol('patched');
+            var originalTick_1 = (clock[symbol('tick')] = clock.tick);
             clock.tick = function () {
                 var fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                 if (fakeAsyncZoneSpec) {
                     return fakeAsyncZoneSpec.tick.apply(fakeAsyncZoneSpec, arguments);
                 }
-                return originalTick.apply(this, arguments);
+                return originalTick_1.apply(this, arguments);
             };
-            var originalMockDate = (clock[symbol('mockDate')] = clock.mockDate);
+            var originalMockDate_1 = (clock[symbol('mockDate')] = clock.mockDate);
             clock.mockDate = function () {
                 var fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                 if (fakeAsyncZoneSpec) {
-                    var dateTime = arguments[0];
+                    var dateTime = arguments.length > 0 ? arguments[0] : new Date();
                     return fakeAsyncZoneSpec.setCurrentRealTime.apply(fakeAsyncZoneSpec, dateTime && typeof dateTime.getTime === 'function' ? [dateTime.getTime()] :
                         arguments);
                 }
-                return originalMockDate.apply(this, arguments);
+                return originalMockDate_1.apply(this, arguments);
             };
-            ['install', 'uninstall'].forEach(function (methodName) {
-                var originalClockFn = (clock[symbol(methodName)] = clock[methodName]);
-                clock[methodName] = function () {
-                    var FakeAsyncTestZoneSpec = Zone['FakeAsyncTestZoneSpec'];
-                    if (FakeAsyncTestZoneSpec) {
-                        jasmine[symbol('clockInstalled')] = 'install' === methodName;
-                        return;
-                    }
-                    return originalClockFn.apply(this, arguments);
-                };
-            });
-            return clock;
-        };
-    }
+            // for auto go into fakeAsync feature, we need the flag to enable it
+            if (enableClockPatch) {
+                ['install', 'uninstall'].forEach(function (methodName) {
+                    var originalClockFn = (clock[symbol(methodName)] = clock[methodName]);
+                    clock[methodName] = function () {
+                        var FakeAsyncTestZoneSpec = Zone['FakeAsyncTestZoneSpec'];
+                        if (FakeAsyncTestZoneSpec) {
+                            jasmine[symbol('clockInstalled')] = 'install' === methodName;
+                            return;
+                        }
+                        return originalClockFn.apply(this, arguments);
+                    };
+                });
+            }
+        }
+        return clock;
+    };
     /**
      * Gets a function wrapping the body of a Jasmine `describe` block to execute in a
      * synchronous-only zone.
diff --git a/dist/jasmine-patch.min.js b/dist/jasmine-patch.min.js
index 8af9c4493..e78cb748a 100644
--- a/dist/jasmine-patch.min.js
+++ b/dist/jasmine-patch.min.js
@@ -1 +1 @@
-!function(e,n){"object"==typeof exports&&"undefined"!=typeof module?n():"function"==typeof define&&define.amd?define(n):n()}(this,function(){"use strict";!function(){function e(e){return function(){return u.run(e,this,arguments)}}function n(e,n,t,o){var r=!!jasmine[a("clockInstalled")],i=(t.testProxyZoneSpec,t.testProxyZone);if(r&&f){var s=Zone[Zone.__symbol__("fakeAsyncTest")];s&&"function"==typeof s.fakeAsync&&(e=s.fakeAsync(e))}return o?i.run(e,n,[o]):i.run(e,n)}function t(e){return e&&(e.length?function(t){return n(e,this,this.queueRunner,t)}:function(){return n(e,this,this.queueRunner)})}var o=function(e,n){function t(){this.constructor=e}for(var o in n)n.hasOwnProperty(o)&&(e[o]=n[o]);e.prototype=null===n?Object.create(n):(t.prototype=n.prototype,new t)},r="undefined"!=typeof window&&window||"undefined"!=typeof self&&self||global;if(!Zone)throw new Error("Missing: zone.js");if("undefined"==typeof jasmine)throw new Error("Missing: jasmine.js");if(jasmine.__zone_patch__)throw new Error("'jasmine' has already been patched with 'Zone'.");jasmine.__zone_patch__=!0;var i=Zone.SyncTestZoneSpec,s=Zone.ProxyZoneSpec;if(!i)throw new Error("Missing: SyncTestZoneSpec");if(!s)throw new Error("Missing: ProxyZoneSpec");var c=Zone.current,u=c.fork(new i("jasmine.describe")),a=Zone.__symbol__,f=r[a("fakeAsyncPatchLock")]===!0,l=jasmine.getEnv();if(["describe","xdescribe","fdescribe"].forEach(function(n){var t=l[n];l[n]=function(n,o){return t.call(this,n,e(o))}}),["it","xit","fit"].forEach(function(e){var n=l[e];l[a(e)]=n,l[e]=function(e,o,r){return arguments[1]=t(o),n.apply(this,arguments)}}),["beforeEach","afterEach"].forEach(function(e){var n=l[e];l[a(e)]=n,l[e]=function(e,o){return arguments[0]=t(e),n.apply(this,arguments)}}),f){var p=jasmine[a("clock")]=jasmine.clock;jasmine.clock=function(){var e=p.apply(this,arguments),n=e[a("tick")]=e.tick;e.tick=function(){var e=Zone.current.get("FakeAsyncTestZoneSpec");return e?e.tick.apply(e,arguments):n.apply(this,arguments)};var t=e[a("mockDate")]=e.mockDate;return e.mockDate=function(){var e=Zone.current.get("FakeAsyncTestZoneSpec");if(e){var n=arguments[0];return e.setCurrentRealTime.apply(e,n&&"function"==typeof n.getTime?[n.getTime()]:arguments)}return t.apply(this,arguments)},["install","uninstall"].forEach(function(n){var t=e[a(n)]=e[n];e[n]=function(){var e=Zone.FakeAsyncTestZoneSpec;return e?void(jasmine[a("clockInstalled")]="install"===n):t.apply(this,arguments)}}),e}}var h=jasmine.QueueRunner;jasmine.QueueRunner=function(e){function n(n){var t=this;n.onComplete=function(e){return function(){t.testProxyZone=null,t.testProxyZoneSpec=null,c.scheduleMicroTask("jasmine.onComplete",e)}}(n.onComplete);var o=r.__zone_symbol__setTimeout,i=r.__zone_symbol__clearTimeout;o&&(n.timeout={setTimeout:o?o:r.setTimeout,clearTimeout:i?i:r.clearTimeout}),jasmine.UserContext?(n.userContext||(n.userContext=new jasmine.UserContext),n.userContext.queueRunner=this):(n.userContext||(n.userContext={}),n.userContext.queueRunner=this);var s=n.onException;n.onException=function(e){if(e&&"Timeout - Async callback was not invoked within timeout specified by jasmine.DEFAULT_TIMEOUT_INTERVAL."===e.message){var n=this&&this.testProxyZoneSpec;if(n){var t=n.getAndClearPendingTasksInfo();e.message+=t}}s&&s.call(this,e)},e.call(this,n)}return o(n,e),n.prototype.execute=function(){for(var n=this,t=Zone.current,o=!1;t;){if(t===c){o=!0;break}t=t.parent}if(!o)throw new Error("Unexpected Zone: "+Zone.current.name);this.testProxyZoneSpec=new s,this.testProxyZone=c.fork(this.testProxyZoneSpec),Zone.currentTask?e.prototype.execute.call(this):Zone.current.scheduleMicroTask("jasmine.execute().forceTask",function(){return h.prototype.execute.call(n)})},n}(h)}()});
\ No newline at end of file
+!function(e,n){"object"==typeof exports&&"undefined"!=typeof module?n():"function"==typeof define&&define.amd?define(n):n()}(this,function(){"use strict";!function(){function e(e){return function(){return a.run(e,this,arguments)}}function n(e,n,t,o){var r=!!jasmine[u("clockInstalled")],i=(t.testProxyZoneSpec,t.testProxyZone);if(r&&f){var c=Zone[Zone.__symbol__("fakeAsyncTest")];c&&"function"==typeof c.fakeAsync&&(e=c.fakeAsync(e))}return o?i.run(e,n,[o]):i.run(e,n)}function t(e){return e&&(e.length?function(t){return n(e,this,this.queueRunner,t)}:function(){return n(e,this,this.queueRunner)})}var o=function(e,n){function t(){this.constructor=e}for(var o in n)n.hasOwnProperty(o)&&(e[o]=n[o]);e.prototype=null===n?Object.create(n):(t.prototype=n.prototype,new t)},r="undefined"!=typeof window&&window||"undefined"!=typeof self&&self||global;if(!Zone)throw new Error("Missing: zone.js");if("undefined"==typeof jasmine)throw new Error("Missing: jasmine.js");if(jasmine.__zone_patch__)throw new Error("'jasmine' has already been patched with 'Zone'.");jasmine.__zone_patch__=!0;var i=Zone.SyncTestZoneSpec,c=Zone.ProxyZoneSpec;if(!i)throw new Error("Missing: SyncTestZoneSpec");if(!c)throw new Error("Missing: ProxyZoneSpec");var s=Zone.current,a=s.fork(new i("jasmine.describe")),u=Zone.__symbol__,f=r[u("fakeAsyncPatchLock")]===!0,p=jasmine.getEnv();["describe","xdescribe","fdescribe"].forEach(function(n){var t=p[n];p[n]=function(n,o){return t.call(this,n,e(o))}}),["it","xit","fit"].forEach(function(e){var n=p[e];p[u(e)]=n,p[e]=function(e,o,r){return arguments[1]=t(o),n.apply(this,arguments)}}),["beforeEach","afterEach"].forEach(function(e){var n=p[e];p[u(e)]=n,p[e]=function(e,o){return arguments[0]=t(e),n.apply(this,arguments)}});var l=jasmine[u("clock")]=jasmine.clock;jasmine.clock=function(){var e=l.apply(this,arguments);if(!e[u("patched")]){e[u("patched")]=u("patched");var n=e[u("tick")]=e.tick;e.tick=function(){var e=Zone.current.get("FakeAsyncTestZoneSpec");return e?e.tick.apply(e,arguments):n.apply(this,arguments)};var t=e[u("mockDate")]=e.mockDate;e.mockDate=function(){var e=Zone.current.get("FakeAsyncTestZoneSpec");if(e){var n=arguments.length>0?arguments[0]:new Date;return e.setCurrentRealTime.apply(e,n&&"function"==typeof n.getTime?[n.getTime()]:arguments)}return t.apply(this,arguments)},f&&["install","uninstall"].forEach(function(n){var t=e[u(n)]=e[n];e[n]=function(){var e=Zone.FakeAsyncTestZoneSpec;return e?void(jasmine[u("clockInstalled")]="install"===n):t.apply(this,arguments)}})}return e};var h=jasmine.QueueRunner;jasmine.QueueRunner=function(e){function n(n){var t=this;n.onComplete=function(e){return function(){t.testProxyZone=null,t.testProxyZoneSpec=null,s.scheduleMicroTask("jasmine.onComplete",e)}}(n.onComplete);var o=r.__zone_symbol__setTimeout,i=r.__zone_symbol__clearTimeout;o&&(n.timeout={setTimeout:o?o:r.setTimeout,clearTimeout:i?i:r.clearTimeout}),jasmine.UserContext?(n.userContext||(n.userContext=new jasmine.UserContext),n.userContext.queueRunner=this):(n.userContext||(n.userContext={}),n.userContext.queueRunner=this);var c=n.onException;n.onException=function(e){if(e&&"Timeout - Async callback was not invoked within timeout specified by jasmine.DEFAULT_TIMEOUT_INTERVAL."===e.message){var n=this&&this.testProxyZoneSpec;if(n){var t=n.getAndClearPendingTasksInfo();e.message+=t}}c&&c.call(this,e)},e.call(this,n)}return o(n,e),n.prototype.execute=function(){for(var n=this,t=Zone.current,o=!1;t;){if(t===s){o=!0;break}t=t.parent}if(!o)throw new Error("Unexpected Zone: "+Zone.current.name);this.testProxyZoneSpec=new c,this.testProxyZone=s.fork(this.testProxyZoneSpec),Zone.currentTask?e.prototype.execute.call(this):Zone.current.scheduleMicroTask("jasmine.execute().forceTask",function(){return h.prototype.execute.call(n)})},n}(h)}()});
\ No newline at end of file
diff --git a/dist/zone-patch-resize-observer.js b/dist/zone-patch-resize-observer.js
index b0cabc088..e80c32588 100644
--- a/dist/zone-patch-resize-observer.js
+++ b/dist/zone-patch-resize-observer.js
@@ -11,6 +11,16 @@
 	(factory());
 }(this, (function () { 'use strict';
 
+var __values = (undefined && undefined.__values) || function (o) {
+    var m = typeof Symbol === "function" && o[Symbol.iterator], i = 0;
+    if (m) return m.call(o);
+    return {
+        next: function () {
+            if (o && i >= o.length) o = void 0;
+            return { value: o && o[i++], done: !o };
+        }
+    };
+};
 /**
  * @license
  * Copyright Google Inc. All Rights Reserved.
@@ -31,17 +41,26 @@ Zone.__load_patch('ResizeObserver', function (global, Zone, api) {
                 var _this = this;
                 var zones = {};
                 var currZone = Zone.current;
-                for (var _i = 0, entries_1 = entries; _i < entries_1.length; _i++) {
-                    var entry = entries_1[_i];
-                    var zone = entry.target[resizeObserverSymbol];
-                    if (!zone) {
-                        zone = currZone;
+                try {
+                    for (var entries_1 = __values(entries), entries_1_1 = entries_1.next(); !entries_1_1.done; entries_1_1 = entries_1.next()) {
+                        var entry = entries_1_1.value;
+                        var zone = entry.target[resizeObserverSymbol];
+                        if (!zone) {
+                            zone = currZone;
+                        }
+                        var zoneEntriesInfo = zones[zone.name];
+                        if (!zoneEntriesInfo) {
+                            zones[zone.name] = zoneEntriesInfo = { entries: [], zone: zone };
+                        }
+                        zoneEntriesInfo.entries.push(entry);
                     }
-                    var zoneEntriesInfo = zones[zone.name];
-                    if (!zoneEntriesInfo) {
-                        zones[zone.name] = zoneEntriesInfo = { entries: [], zone: zone };
+                }
+                catch (e_1_1) { e_1 = { error: e_1_1 }; }
+                finally {
+                    try {
+                        if (entries_1_1 && !entries_1_1.done && (_a = entries_1.return)) _a.call(entries_1);
                     }
-                    zoneEntriesInfo.entries.push(entry);
+                    finally { if (e_1) throw e_1.error; }
                 }
                 Object.keys(zones).forEach(function (zoneName) {
                     var zoneEntriesInfo = zones[zoneName];
@@ -52,6 +71,7 @@ Zone.__load_patch('ResizeObserver', function (global, Zone, api) {
                         callback.call(_this, zoneEntriesInfo.entries, observer);
                     }
                 });
+                var e_1, _a;
             };
         }
         return args.length > 0 ? new ResizeObserver(args[0]) : new ResizeObserver();
diff --git a/dist/zone-patch-resize-observer.min.js b/dist/zone-patch-resize-observer.min.js
index bffe2a10a..4e3ef0583 100644
--- a/dist/zone-patch-resize-observer.min.js
+++ b/dist/zone-patch-resize-observer.min.js
@@ -1 +1 @@
-!function(e,n){"object"==typeof exports&&"undefined"!=typeof module?n():"function"==typeof define&&define.amd?define(n):n()}(this,function(){"use strict";Zone.__load_patch("ResizeObserver",function(e,n,r){var t=e.ResizeObserver;if(t){var o=r.symbol("ResizeObserver");r.patchMethod(e,"ResizeObserver",function(e){return function(e,r){var i=r.length>0?r[0]:null;return i&&(r[0]=function(e,r){for(var t=this,u={},a=n.current,c=0,f=e;c<f.length;c++){var p=f[c],s=p.target[o];s||(s=a);var l=u[s.name];l||(u[s.name]=l={entries:[],zone:s}),l.entries.push(p)}Object.keys(u).forEach(function(e){var o=u[e];o.zone!==n.current?o.zone.run(i,t,[o.entries,r],"ResizeObserver"):i.call(t,o.entries,r)})}),r.length>0?new t(r[0]):new t}}),r.patchMethod(t.prototype,"observe",function(e){return function(r,t){var i=t.length>0?t[0]:null;if(!i)return e.apply(r,t);var u=r[o];return u||(u=r[o]=[]),u.push(i),i[o]=n.current,e.apply(r,t)}}),r.patchMethod(t.prototype,"unobserve",function(e){return function(n,r){var t=r.length>0?r[0]:null;if(!t)return e.apply(n,r);var i=n[o];if(i)for(var u=0;u<i.length;u++)if(i[u]===t){i.splice(u,1);break}return t[o]=void 0,e.apply(n,r)}}),r.patchMethod(t.prototype,"disconnect",function(e){return function(n,r){var t=n[o];return t&&(t.forEach(function(e){e[o]=void 0}),n[o]=void 0),e.apply(n,r)}})}})});
\ No newline at end of file
+!function(e,n){"object"==typeof exports&&"undefined"!=typeof module?n():"function"==typeof define&&define.amd?define(n):n()}(this,function(){"use strict";var e=function(e){var n="function"==typeof Symbol&&e[Symbol.iterator],r=0;return n?n.call(e):{next:function(){return e&&r>=e.length&&(e=void 0),{value:e&&e[r++],done:!e}}}};Zone.__load_patch("ResizeObserver",function(n,r,t){var o=n.ResizeObserver;if(o){var i=t.symbol("ResizeObserver");t.patchMethod(n,"ResizeObserver",function(n){return function(n,t){var u=t.length>0?t[0]:null;return u&&(t[0]=function(n,t){var o=this,a={},c=r.current;try{for(var f=e(n),l=f.next();!l.done;l=f.next()){var v=l.value,p=v.target[i];p||(p=c);var s=a[p.name];s||(a[p.name]=s={entries:[],zone:p}),s.entries.push(v)}}catch(h){d={error:h}}finally{try{l&&!l.done&&(y=f["return"])&&y.call(f)}finally{if(d)throw d.error}}Object.keys(a).forEach(function(e){var n=a[e];n.zone!==r.current?n.zone.run(u,o,[n.entries,t],"ResizeObserver"):u.call(o,n.entries,t)});var d,y}),t.length>0?new o(t[0]):new o}}),t.patchMethod(o.prototype,"observe",function(e){return function(n,t){var o=t.length>0?t[0]:null;if(!o)return e.apply(n,t);var u=n[i];return u||(u=n[i]=[]),u.push(o),o[i]=r.current,e.apply(n,t)}}),t.patchMethod(o.prototype,"unobserve",function(e){return function(n,r){var t=r.length>0?r[0]:null;if(!t)return e.apply(n,r);var o=n[i];if(o)for(var u=0;u<o.length;u++)if(o[u]===t){o.splice(u,1);break}return t[i]=void 0,e.apply(n,r)}}),t.patchMethod(o.prototype,"disconnect",function(e){return function(n,r){var t=n[i];return t&&(t.forEach(function(e){e[i]=void 0}),n[i]=void 0),e.apply(n,r)}})}})});
\ No newline at end of file
diff --git a/dist/zone-testing-bundle.js b/dist/zone-testing-bundle.js
index 21f62dec2..7a8a81e5e 100644
--- a/dist/zone-testing-bundle.js
+++ b/dist/zone-testing-bundle.js
@@ -3486,42 +3486,48 @@ Zone['SyncTestZoneSpec'] = SyncTestZoneSpec;
             return originalJasmineFn.apply(this, arguments);
         };
     });
-    if (enableClockPatch) {
-        var originalClockFn_1 = (jasmine[symbol('clock')] = jasmine['clock']);
-        jasmine['clock'] = function () {
-            var clock = originalClockFn_1.apply(this, arguments);
-            var originalTick = (clock[symbol('tick')] = clock.tick);
+    // need to patch jasmine.clock().mockDate and jasmine.clock().tick() so
+    // they can work properly in FakeAsyncTest
+    var originalClockFn = (jasmine[symbol('clock')] = jasmine['clock']);
+    jasmine['clock'] = function () {
+        var clock = originalClockFn.apply(this, arguments);
+        if (!clock[symbol('patched')]) {
+            clock[symbol('patched')] = symbol('patched');
+            var originalTick_1 = (clock[symbol('tick')] = clock.tick);
             clock.tick = function () {
                 var fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                 if (fakeAsyncZoneSpec) {
                     return fakeAsyncZoneSpec.tick.apply(fakeAsyncZoneSpec, arguments);
                 }
-                return originalTick.apply(this, arguments);
+                return originalTick_1.apply(this, arguments);
             };
-            var originalMockDate = (clock[symbol('mockDate')] = clock.mockDate);
+            var originalMockDate_1 = (clock[symbol('mockDate')] = clock.mockDate);
             clock.mockDate = function () {
                 var fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                 if (fakeAsyncZoneSpec) {
-                    var dateTime = arguments[0];
+                    var dateTime = arguments.length > 0 ? arguments[0] : new Date();
                     return fakeAsyncZoneSpec.setCurrentRealTime.apply(fakeAsyncZoneSpec, dateTime && typeof dateTime.getTime === 'function' ? [dateTime.getTime()] :
                         arguments);
                 }
-                return originalMockDate.apply(this, arguments);
+                return originalMockDate_1.apply(this, arguments);
             };
-            ['install', 'uninstall'].forEach(function (methodName) {
-                var originalClockFn = (clock[symbol(methodName)] = clock[methodName]);
-                clock[methodName] = function () {
-                    var FakeAsyncTestZoneSpec = Zone['FakeAsyncTestZoneSpec'];
-                    if (FakeAsyncTestZoneSpec) {
-                        jasmine[symbol('clockInstalled')] = 'install' === methodName;
-                        return;
-                    }
-                    return originalClockFn.apply(this, arguments);
-                };
-            });
-            return clock;
-        };
-    }
+            // for auto go into fakeAsync feature, we need the flag to enable it
+            if (enableClockPatch) {
+                ['install', 'uninstall'].forEach(function (methodName) {
+                    var originalClockFn = (clock[symbol(methodName)] = clock[methodName]);
+                    clock[methodName] = function () {
+                        var FakeAsyncTestZoneSpec = Zone['FakeAsyncTestZoneSpec'];
+                        if (FakeAsyncTestZoneSpec) {
+                            jasmine[symbol('clockInstalled')] = 'install' === methodName;
+                            return;
+                        }
+                        return originalClockFn.apply(this, arguments);
+                    };
+                });
+            }
+        }
+        return clock;
+    };
     /**
      * Gets a function wrapping the body of a Jasmine `describe` block to execute in a
      * synchronous-only zone.
@@ -3889,17 +3895,40 @@ Zone.__load_patch('asynctest', function (global, Zone, api) {
  * Use of this source code is governed by an MIT-style license that can be
  * found in the LICENSE file at https://angular.io/license
  */
+var __read = (undefined && undefined.__read) || function (o, n) {
+    var m = typeof Symbol === "function" && o[Symbol.iterator];
+    if (!m) return o;
+    var i = m.call(o), r, ar = [], e;
+    try {
+        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
+    }
+    catch (error) { e = { error: error }; }
+    finally {
+        try {
+            if (r && !r.done && (m = i["return"])) m.call(i);
+        }
+        finally { if (e) throw e.error; }
+    }
+    return ar;
+};
+var __spread = (undefined && undefined.__spread) || function () {
+    for (var ar = [], i = 0; i < arguments.length; i++) ar = ar.concat(__read(arguments[i]));
+    return ar;
+};
 (function (global) {
     var OriginalDate = global.Date;
     var FakeDate = /** @class */ (function () {
         function FakeDate() {
-            var d = new OriginalDate();
-            d.setTime(global.Date.now());
-            return d;
+            if (arguments.length === 0) {
+                var d = new OriginalDate();
+                d.setTime(FakeDate.now());
+                return d;
+            }
+            else {
+                var args = Array.prototype.slice.call(arguments);
+                return new (OriginalDate.bind.apply(OriginalDate, __spread([void 0], args)))();
+            }
         }
-        FakeDate.UTC = function () {
-            return OriginalDate.UTC();
-        };
         FakeDate.now = function () {
             var fakeAsyncTestZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
             if (fakeAsyncTestZoneSpec) {
@@ -3907,11 +3936,17 @@ Zone.__load_patch('asynctest', function (global, Zone, api) {
             }
             return OriginalDate.now.apply(this, arguments);
         };
-        FakeDate.parse = function () {
-            return OriginalDate.parse();
-        };
         return FakeDate;
     }());
+    FakeDate.UTC = OriginalDate.UTC;
+    FakeDate.parse = OriginalDate.parse;
+    // keep a reference for zone patched timer function
+    var timers = {
+        setTimeout: global.setTimeout,
+        setInterval: global.setInterval,
+        clearTimeout: global.clearTimeout,
+        clearInterval: global.clearInterval
+    };
     var Scheduler = /** @class */ (function () {
         function Scheduler() {
             // Next scheduler id.
@@ -3921,7 +3956,7 @@ Zone.__load_patch('asynctest', function (global, Zone, api) {
             // Current simulated time in millis.
             this._currentTime = 0;
             // Current real time in millis.
-            this._currentRealTime = Date.now();
+            this._currentRealTime = OriginalDate.now();
         }
         Scheduler.prototype.getCurrentTime = function () {
             return this._currentTime;
@@ -4180,12 +4215,26 @@ Zone.__load_patch('asynctest', function (global, Zone, api) {
             }
             global['Date'] = FakeDate;
             FakeDate.prototype = OriginalDate.prototype;
+            // try check and reset timers
+            // because jasmine.clock().install() may
+            // have replaced the global timer
+            FakeAsyncTestZoneSpec.checkTimerPatch();
         };
         FakeAsyncTestZoneSpec.resetDate = function () {
             if (global['Date'] === FakeDate) {
                 global['Date'] = OriginalDate;
             }
         };
+        FakeAsyncTestZoneSpec.checkTimerPatch = function () {
+            if (global.setTimeout !== timers.setTimeout) {
+                global.setTimeout = timers.setTimeout;
+                global.clearTimeout = timers.clearTimeout;
+            }
+            if (global.setInterval !== timers.setInterval) {
+                global.setInterval = timers.setInterval;
+                global.clearInterval = timers.clearInterval;
+            }
+        };
         FakeAsyncTestZoneSpec.prototype.lockDatePatch = function () {
             this.patchDateLocked = true;
             FakeAsyncTestZoneSpec.patchDate();
diff --git a/dist/zone-testing-node-bundle.js b/dist/zone-testing-node-bundle.js
index 5460dfc8c..a95fbf996 100644
--- a/dist/zone-testing-node-bundle.js
+++ b/dist/zone-testing-node-bundle.js
@@ -2724,42 +2724,48 @@ Zone['SyncTestZoneSpec'] = SyncTestZoneSpec;
             return originalJasmineFn.apply(this, arguments);
         };
     });
-    if (enableClockPatch) {
-        var originalClockFn_1 = (jasmine[symbol('clock')] = jasmine['clock']);
-        jasmine['clock'] = function () {
-            var clock = originalClockFn_1.apply(this, arguments);
-            var originalTick = (clock[symbol('tick')] = clock.tick);
+    // need to patch jasmine.clock().mockDate and jasmine.clock().tick() so
+    // they can work properly in FakeAsyncTest
+    var originalClockFn = (jasmine[symbol('clock')] = jasmine['clock']);
+    jasmine['clock'] = function () {
+        var clock = originalClockFn.apply(this, arguments);
+        if (!clock[symbol('patched')]) {
+            clock[symbol('patched')] = symbol('patched');
+            var originalTick_1 = (clock[symbol('tick')] = clock.tick);
             clock.tick = function () {
                 var fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                 if (fakeAsyncZoneSpec) {
                     return fakeAsyncZoneSpec.tick.apply(fakeAsyncZoneSpec, arguments);
                 }
-                return originalTick.apply(this, arguments);
+                return originalTick_1.apply(this, arguments);
             };
-            var originalMockDate = (clock[symbol('mockDate')] = clock.mockDate);
+            var originalMockDate_1 = (clock[symbol('mockDate')] = clock.mockDate);
             clock.mockDate = function () {
                 var fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                 if (fakeAsyncZoneSpec) {
-                    var dateTime = arguments[0];
+                    var dateTime = arguments.length > 0 ? arguments[0] : new Date();
                     return fakeAsyncZoneSpec.setCurrentRealTime.apply(fakeAsyncZoneSpec, dateTime && typeof dateTime.getTime === 'function' ? [dateTime.getTime()] :
                         arguments);
                 }
-                return originalMockDate.apply(this, arguments);
+                return originalMockDate_1.apply(this, arguments);
             };
-            ['install', 'uninstall'].forEach(function (methodName) {
-                var originalClockFn = (clock[symbol(methodName)] = clock[methodName]);
-                clock[methodName] = function () {
-                    var FakeAsyncTestZoneSpec = Zone['FakeAsyncTestZoneSpec'];
-                    if (FakeAsyncTestZoneSpec) {
-                        jasmine[symbol('clockInstalled')] = 'install' === methodName;
-                        return;
-                    }
-                    return originalClockFn.apply(this, arguments);
-                };
-            });
-            return clock;
-        };
-    }
+            // for auto go into fakeAsync feature, we need the flag to enable it
+            if (enableClockPatch) {
+                ['install', 'uninstall'].forEach(function (methodName) {
+                    var originalClockFn = (clock[symbol(methodName)] = clock[methodName]);
+                    clock[methodName] = function () {
+                        var FakeAsyncTestZoneSpec = Zone['FakeAsyncTestZoneSpec'];
+                        if (FakeAsyncTestZoneSpec) {
+                            jasmine[symbol('clockInstalled')] = 'install' === methodName;
+                            return;
+                        }
+                        return originalClockFn.apply(this, arguments);
+                    };
+                });
+            }
+        }
+        return clock;
+    };
     /**
      * Gets a function wrapping the body of a Jasmine `describe` block to execute in a
      * synchronous-only zone.
@@ -3127,17 +3133,40 @@ Zone.__load_patch('asynctest', function (global, Zone, api) {
  * Use of this source code is governed by an MIT-style license that can be
  * found in the LICENSE file at https://angular.io/license
  */
+var __read = (undefined && undefined.__read) || function (o, n) {
+    var m = typeof Symbol === "function" && o[Symbol.iterator];
+    if (!m) return o;
+    var i = m.call(o), r, ar = [], e;
+    try {
+        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
+    }
+    catch (error) { e = { error: error }; }
+    finally {
+        try {
+            if (r && !r.done && (m = i["return"])) m.call(i);
+        }
+        finally { if (e) throw e.error; }
+    }
+    return ar;
+};
+var __spread = (undefined && undefined.__spread) || function () {
+    for (var ar = [], i = 0; i < arguments.length; i++) ar = ar.concat(__read(arguments[i]));
+    return ar;
+};
 (function (global) {
     var OriginalDate = global.Date;
     var FakeDate = /** @class */ (function () {
         function FakeDate() {
-            var d = new OriginalDate();
-            d.setTime(global.Date.now());
-            return d;
+            if (arguments.length === 0) {
+                var d = new OriginalDate();
+                d.setTime(FakeDate.now());
+                return d;
+            }
+            else {
+                var args = Array.prototype.slice.call(arguments);
+                return new (OriginalDate.bind.apply(OriginalDate, __spread([void 0], args)))();
+            }
         }
-        FakeDate.UTC = function () {
-            return OriginalDate.UTC();
-        };
         FakeDate.now = function () {
             var fakeAsyncTestZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
             if (fakeAsyncTestZoneSpec) {
@@ -3145,11 +3174,17 @@ Zone.__load_patch('asynctest', function (global, Zone, api) {
             }
             return OriginalDate.now.apply(this, arguments);
         };
-        FakeDate.parse = function () {
-            return OriginalDate.parse();
-        };
         return FakeDate;
     }());
+    FakeDate.UTC = OriginalDate.UTC;
+    FakeDate.parse = OriginalDate.parse;
+    // keep a reference for zone patched timer function
+    var timers = {
+        setTimeout: global.setTimeout,
+        setInterval: global.setInterval,
+        clearTimeout: global.clearTimeout,
+        clearInterval: global.clearInterval
+    };
     var Scheduler = /** @class */ (function () {
         function Scheduler() {
             // Next scheduler id.
@@ -3159,7 +3194,7 @@ Zone.__load_patch('asynctest', function (global, Zone, api) {
             // Current simulated time in millis.
             this._currentTime = 0;
             // Current real time in millis.
-            this._currentRealTime = Date.now();
+            this._currentRealTime = OriginalDate.now();
         }
         Scheduler.prototype.getCurrentTime = function () {
             return this._currentTime;
@@ -3418,12 +3453,26 @@ Zone.__load_patch('asynctest', function (global, Zone, api) {
             }
             global['Date'] = FakeDate;
             FakeDate.prototype = OriginalDate.prototype;
+            // try check and reset timers
+            // because jasmine.clock().install() may
+            // have replaced the global timer
+            FakeAsyncTestZoneSpec.checkTimerPatch();
         };
         FakeAsyncTestZoneSpec.resetDate = function () {
             if (global['Date'] === FakeDate) {
                 global['Date'] = OriginalDate;
             }
         };
+        FakeAsyncTestZoneSpec.checkTimerPatch = function () {
+            if (global.setTimeout !== timers.setTimeout) {
+                global.setTimeout = timers.setTimeout;
+                global.clearTimeout = timers.clearTimeout;
+            }
+            if (global.setInterval !== timers.setInterval) {
+                global.setInterval = timers.setInterval;
+                global.clearInterval = timers.clearInterval;
+            }
+        };
         FakeAsyncTestZoneSpec.prototype.lockDatePatch = function () {
             this.patchDateLocked = true;
             FakeAsyncTestZoneSpec.patchDate();
diff --git a/dist/zone-testing.js b/dist/zone-testing.js
index 06e1596c4..aa2bbb2f2 100644
--- a/dist/zone-testing.js
+++ b/dist/zone-testing.js
@@ -440,42 +440,48 @@ Zone['SyncTestZoneSpec'] = SyncTestZoneSpec;
             return originalJasmineFn.apply(this, arguments);
         };
     });
-    if (enableClockPatch) {
-        var originalClockFn_1 = (jasmine[symbol('clock')] = jasmine['clock']);
-        jasmine['clock'] = function () {
-            var clock = originalClockFn_1.apply(this, arguments);
-            var originalTick = (clock[symbol('tick')] = clock.tick);
+    // need to patch jasmine.clock().mockDate and jasmine.clock().tick() so
+    // they can work properly in FakeAsyncTest
+    var originalClockFn = (jasmine[symbol('clock')] = jasmine['clock']);
+    jasmine['clock'] = function () {
+        var clock = originalClockFn.apply(this, arguments);
+        if (!clock[symbol('patched')]) {
+            clock[symbol('patched')] = symbol('patched');
+            var originalTick_1 = (clock[symbol('tick')] = clock.tick);
             clock.tick = function () {
                 var fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                 if (fakeAsyncZoneSpec) {
                     return fakeAsyncZoneSpec.tick.apply(fakeAsyncZoneSpec, arguments);
                 }
-                return originalTick.apply(this, arguments);
+                return originalTick_1.apply(this, arguments);
             };
-            var originalMockDate = (clock[symbol('mockDate')] = clock.mockDate);
+            var originalMockDate_1 = (clock[symbol('mockDate')] = clock.mockDate);
             clock.mockDate = function () {
                 var fakeAsyncZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
                 if (fakeAsyncZoneSpec) {
-                    var dateTime = arguments[0];
+                    var dateTime = arguments.length > 0 ? arguments[0] : new Date();
                     return fakeAsyncZoneSpec.setCurrentRealTime.apply(fakeAsyncZoneSpec, dateTime && typeof dateTime.getTime === 'function' ? [dateTime.getTime()] :
                         arguments);
                 }
-                return originalMockDate.apply(this, arguments);
+                return originalMockDate_1.apply(this, arguments);
             };
-            ['install', 'uninstall'].forEach(function (methodName) {
-                var originalClockFn = (clock[symbol(methodName)] = clock[methodName]);
-                clock[methodName] = function () {
-                    var FakeAsyncTestZoneSpec = Zone['FakeAsyncTestZoneSpec'];
-                    if (FakeAsyncTestZoneSpec) {
-                        jasmine[symbol('clockInstalled')] = 'install' === methodName;
-                        return;
-                    }
-                    return originalClockFn.apply(this, arguments);
-                };
-            });
-            return clock;
-        };
-    }
+            // for auto go into fakeAsync feature, we need the flag to enable it
+            if (enableClockPatch) {
+                ['install', 'uninstall'].forEach(function (methodName) {
+                    var originalClockFn = (clock[symbol(methodName)] = clock[methodName]);
+                    clock[methodName] = function () {
+                        var FakeAsyncTestZoneSpec = Zone['FakeAsyncTestZoneSpec'];
+                        if (FakeAsyncTestZoneSpec) {
+                            jasmine[symbol('clockInstalled')] = 'install' === methodName;
+                            return;
+                        }
+                        return originalClockFn.apply(this, arguments);
+                    };
+                });
+            }
+        }
+        return clock;
+    };
     /**
      * Gets a function wrapping the body of a Jasmine `describe` block to execute in a
      * synchronous-only zone.
@@ -843,17 +849,40 @@ Zone.__load_patch('asynctest', function (global, Zone, api) {
  * Use of this source code is governed by an MIT-style license that can be
  * found in the LICENSE file at https://angular.io/license
  */
+var __read = (undefined && undefined.__read) || function (o, n) {
+    var m = typeof Symbol === "function" && o[Symbol.iterator];
+    if (!m) return o;
+    var i = m.call(o), r, ar = [], e;
+    try {
+        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
+    }
+    catch (error) { e = { error: error }; }
+    finally {
+        try {
+            if (r && !r.done && (m = i["return"])) m.call(i);
+        }
+        finally { if (e) throw e.error; }
+    }
+    return ar;
+};
+var __spread = (undefined && undefined.__spread) || function () {
+    for (var ar = [], i = 0; i < arguments.length; i++) ar = ar.concat(__read(arguments[i]));
+    return ar;
+};
 (function (global) {
     var OriginalDate = global.Date;
     var FakeDate = /** @class */ (function () {
         function FakeDate() {
-            var d = new OriginalDate();
-            d.setTime(global.Date.now());
-            return d;
+            if (arguments.length === 0) {
+                var d = new OriginalDate();
+                d.setTime(FakeDate.now());
+                return d;
+            }
+            else {
+                var args = Array.prototype.slice.call(arguments);
+                return new (OriginalDate.bind.apply(OriginalDate, __spread([void 0], args)))();
+            }
         }
-        FakeDate.UTC = function () {
-            return OriginalDate.UTC();
-        };
         FakeDate.now = function () {
             var fakeAsyncTestZoneSpec = Zone.current.get('FakeAsyncTestZoneSpec');
             if (fakeAsyncTestZoneSpec) {
@@ -861,11 +890,17 @@ Zone.__load_patch('asynctest', function (global, Zone, api) {
             }
             return OriginalDate.now.apply(this, arguments);
         };
-        FakeDate.parse = function () {
-            return OriginalDate.parse();
-        };
         return FakeDate;
     }());
+    FakeDate.UTC = OriginalDate.UTC;
+    FakeDate.parse = OriginalDate.parse;
+    // keep a reference for zone patched timer function
+    var timers = {
+        setTimeout: global.setTimeout,
+        setInterval: global.setInterval,
+        clearTimeout: global.clearTimeout,
+        clearInterval: global.clearInterval
+    };
     var Scheduler = /** @class */ (function () {
         function Scheduler() {
             // Next scheduler id.
@@ -875,7 +910,7 @@ Zone.__load_patch('asynctest', function (global, Zone, api) {
             // Current simulated time in millis.
             this._currentTime = 0;
             // Current real time in millis.
-            this._currentRealTime = Date.now();
+            this._currentRealTime = OriginalDate.now();
         }
         Scheduler.prototype.getCurrentTime = function () {
             return this._currentTime;
@@ -1134,12 +1169,26 @@ Zone.__load_patch('asynctest', function (global, Zone, api) {
             }
             global['Date'] = FakeDate;
             FakeDate.prototype = OriginalDate.prototype;
+            // try check and reset timers
+            // because jasmine.clock().install() may
+            // have replaced the global timer
+            FakeAsyncTestZoneSpec.checkTimerPatch();
         };
         FakeAsyncTestZoneSpec.resetDate = function () {
             if (global['Date'] === FakeDate) {
                 global['Date'] = OriginalDate;
             }
         };
+        FakeAsyncTestZoneSpec.checkTimerPatch = function () {
+            if (global.setTimeout !== timers.setTimeout) {
+                global.setTimeout = timers.setTimeout;
+                global.clearTimeout = timers.clearTimeout;
+            }
+            if (global.setInterval !== timers.setInterval) {
+                global.setInterval = timers.setInterval;
+                global.clearInterval = timers.clearInterval;
+            }
+        };
         FakeAsyncTestZoneSpec.prototype.lockDatePatch = function () {
             this.patchDateLocked = true;
             FakeAsyncTestZoneSpec.patchDate();
diff --git a/package.json b/package.json
index ee5c972e9..b93ffc01b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "zone.js",
-  "version": "0.8.25",
+  "version": "0.8.26",
   "description": "Zones for JavaScript",
   "main": "dist/zone-node.js",
   "browser": "dist/zone.js",