diff --git a/app/Http/Requests/V1/Report/ReportStoreRequest.php b/app/Http/Requests/V1/Report/ReportStoreRequest.php
index 85413d15..44578618 100644
--- a/app/Http/Requests/V1/Report/ReportStoreRequest.php
+++ b/app/Http/Requests/V1/Report/ReportStoreRequest.php
@@ -40,7 +40,7 @@ class ReportStoreRequest extends FormRequest
                 'required',
                 'boolean',
             ],
-            // After this date the report will be automatically set to private (is_public=false) (ISO 8601 format, UTC timezone)
+            // After this date the report will be automatically set to private (is_public=false) (Format: "Y-m-d\TH:i:s\Z", UTC timezone, Example: "2000-02-22T14:58:59Z")
             'public_until' => [
                 'nullable',
                 'date_format:Y-m-d\TH:i:s\Z',
diff --git a/app/Http/Requests/V1/TimeEntry/TimeEntryStoreRequest.php b/app/Http/Requests/V1/TimeEntry/TimeEntryStoreRequest.php
index ecd8449b..cd18130d 100644
--- a/app/Http/Requests/V1/TimeEntry/TimeEntryStoreRequest.php
+++ b/app/Http/Requests/V1/TimeEntry/TimeEntryStoreRequest.php
@@ -59,12 +59,12 @@ class TimeEntryStoreRequest extends FormRequest
                         ->where('project_id', $this->input('project_id'));
                 })->uuid()->withMessage(__('validation.task_belongs_to_project')),
             ],
-            // Start of time entry (ISO 8601 format, UTC timezone)
+            // Start of time entry (Format: "Y-m-d\TH:i:s\Z", UTC timezone, Example: "2000-02-22T14:58:59Z")
             'start' => [
                 'required',
                 'date_format:Y-m-d\TH:i:s\Z',
             ],
-            // End of time entry (ISO 8601 format, UTC timezone)
+            // End of time entry (Format: "Y-m-d\TH:i:s\Z", UTC timezone, Example: "2000-02-22T14:58:59Z")
             'end' => [
                 'nullable',
                 'date_format:Y-m-d\TH:i:s\Z',
diff --git a/app/Http/Requests/V1/TimeEntry/TimeEntryUpdateRequest.php b/app/Http/Requests/V1/TimeEntry/TimeEntryUpdateRequest.php
index 7a703af7..37b3b420 100644
--- a/app/Http/Requests/V1/TimeEntry/TimeEntryUpdateRequest.php
+++ b/app/Http/Requests/V1/TimeEntry/TimeEntryUpdateRequest.php
@@ -59,11 +59,11 @@ class TimeEntryUpdateRequest extends FormRequest
                         ->where('project_id', $this->input('project_id'));
                 })->uuid()->withMessage(__('validation.task_belongs_to_project')),
             ],
-            // Start of time entry (ISO 8601 format, UTC timezone)
+            // Start of time entry (Format: "Y-m-d\TH:i:s\Z", UTC timezone, Example: "2000-02-22T14:58:59Z")
             'start' => [
                 'date_format:Y-m-d\TH:i:s\Z',
             ],
-            // End of time entry (ISO 8601 format, UTC timezone)
+            // End of time entry (Format: "Y-m-d\TH:i:s\Z", UTC timezone, Example: "2000-02-22T14:58:59Z")
             'end' => [
                 'nullable',
                 'date_format:Y-m-d\TH:i:s\Z',