diff --git a/changelog.md b/changelog.md
index 906ba0b..5959083 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,6 +1,10 @@
 # Changelog
 
-## Version 4.0.0 (2022-10-13)
+## Version 4.0.0 (2022-10-14)
+
+### Bug Fixes
+
+- updated `DateValueProvider` service, now correctly returns start of day for format with day
 
 ### Features
 
diff --git a/src/services/dateValueProvider.service.ts b/src/services/dateValueProvider.service.ts
index 7a144d1..5291fc9 100644
--- a/src/services/dateValueProvider.service.ts
+++ b/src/services/dateValueProvider.service.ts
@@ -41,6 +41,12 @@ export class DateValueProvider<TDate = any>
             start = val.startOfHour().value;
             end = val.endOfHour().value;
         }
+        //day
+        else if(fullFormat.indexOf('d') >= 0)
+        {
+            start = val.startOfDay().value;
+            end = val.endOfDay().value;
+        }
         //week
         else if(fullFormat.indexOf('w') >= 0)
         {