diff --git a/docs/Configuration.md b/docs/Configuration.md
index 208f188d22d0..98cc950e9369 100644
--- a/docs/Configuration.md
+++ b/docs/Configuration.md
@@ -662,7 +662,7 @@ type ModernFakeTimersConfig = {
    * The default is `false`.
    */
   legacyFakeTimers?: boolean;
-  /** Sets current system time to be used by fake timers. The default is `Date.now()`. */
+  /** Sets current system time to be used by fake timers, in milliseconds. The default is `Date.now()`. */
   now?: number;
   /** Maximum number of recursive timers that will be run. The default is `100_000` timers. */
   timerLimit?: number;
diff --git a/website/versioned_docs/version-29.4/Configuration.md b/website/versioned_docs/version-29.4/Configuration.md
index 74387886377f..4f42607a80fe 100644
--- a/website/versioned_docs/version-29.4/Configuration.md
+++ b/website/versioned_docs/version-29.4/Configuration.md
@@ -653,7 +653,7 @@ type ModernFakeTimersConfig = {
    * The default is `false`.
    */
   legacyFakeTimers?: boolean;
-  /** Sets current system time to be used by fake timers. The default is `Date.now()`. */
+  /** Sets current system time to be used by fake timers, in milliseconds. The default is `Date.now()`. */
   now?: number;
   /** Maximum number of recursive timers that will be run. The default is `100_000` timers. */
   timerLimit?: number;
diff --git a/website/versioned_docs/version-29.5/Configuration.md b/website/versioned_docs/version-29.5/Configuration.md
index 632fe800cd5a..5a45e6d020f9 100644
--- a/website/versioned_docs/version-29.5/Configuration.md
+++ b/website/versioned_docs/version-29.5/Configuration.md
@@ -653,7 +653,7 @@ type ModernFakeTimersConfig = {
    * The default is `false`.
    */
   legacyFakeTimers?: boolean;
-  /** Sets current system time to be used by fake timers. The default is `Date.now()`. */
+  /** Sets current system time to be used by fake timers, in milliseconds. The default is `Date.now()`. */
   now?: number;
   /** Maximum number of recursive timers that will be run. The default is `100_000` timers. */
   timerLimit?: number;
diff --git a/website/versioned_docs/version-29.6/Configuration.md b/website/versioned_docs/version-29.6/Configuration.md
index 4a95c468b3f5..46562c62b00d 100644
--- a/website/versioned_docs/version-29.6/Configuration.md
+++ b/website/versioned_docs/version-29.6/Configuration.md
@@ -653,7 +653,7 @@ type ModernFakeTimersConfig = {
    * The default is `false`.
    */
   legacyFakeTimers?: boolean;
-  /** Sets current system time to be used by fake timers. The default is `Date.now()`. */
+  /** Sets current system time to be used by fake timers, in milliseconds. The default is `Date.now()`. */
   now?: number;
   /** Maximum number of recursive timers that will be run. The default is `100_000` timers. */
   timerLimit?: number;
diff --git a/website/versioned_docs/version-29.7/Configuration.md b/website/versioned_docs/version-29.7/Configuration.md
index 4a95c468b3f5..46562c62b00d 100644
--- a/website/versioned_docs/version-29.7/Configuration.md
+++ b/website/versioned_docs/version-29.7/Configuration.md
@@ -653,7 +653,7 @@ type ModernFakeTimersConfig = {
    * The default is `false`.
    */
   legacyFakeTimers?: boolean;
-  /** Sets current system time to be used by fake timers. The default is `Date.now()`. */
+  /** Sets current system time to be used by fake timers, in milliseconds. The default is `Date.now()`. */
   now?: number;
   /** Maximum number of recursive timers that will be run. The default is `100_000` timers. */
   timerLimit?: number;