Calendar Problems

Fix SharePoint Group Calendar Showing All-Day Events One Day Late

Maira Mehtab Sep 20, 2026 868 views

Question details

The user is experiencing an issue where all-day events in the SharePoint Group calendar web part appear one day later than scheduled.

Product: SharePoint
Device & OS: not provided
Scenario: Viewing all-day events on a SharePoint Group calendar web part.
Observed behavior: All-day events are displayed one day late, even when the SharePoint site and calendar time zones are configured correctly.

Before you start

Verify that your SharePoint site regional settings and the specific calendar's time zone settings match your current local time zone to completely rule out configuration errors.

Solution 1Recommended

Report the Known Bug to the SharePoint Feedback Community

Since this behavior is identified as a SharePoint bug, the best course of action is to report it directly to Microsoft with supporting evidence.

Microsoft relies on user reports to track and prioritize fixes for web part rendering issues. Submitting a detailed report with sanitized screenshots helps escalate the problem.

Capture a screenshot

Take a full screenshot of the calendar web part showing the delayed all-day event. Ensure you use an image editor to mask or blur any personal or sensitive information.

Visit the Feedback Community

Navigate to the official Microsoft SharePoint Feedback Community portal in your web browser.

Submit the report

Create a new feedback post detailing the issue, attach your sanitized screenshot, and explicitly mention that your site and calendar time zones are already correctly configured.

Internal Tracking: Microsoft is often aware of these web part sync issues internally, but adding your report to the Feedback Community helps expedite the resolution.

Solution 2

Use Standard Event Times Instead of All-Day Mode

As a temporary workaround while waiting for a bug fix, you can avoid using the 'All-day event' toggle to force the calendar to display the correct day.

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Frequently Asked Questions

Why is my SharePoint calendar showing events on the wrong day?

This is often caused by a mismatch in time zone settings between the SharePoint site, the specific calendar, or your local device. However, if all settings are correct, it is likely a known rendering bug with the SharePoint Group calendar web part.

How do I check the time zone of my SharePoint calendar?

Navigate to the calendar, click on the Calendar tab in the top ribbon, select List Settings, and then click on 'Title, description and navigation' to verify or change the calendar's specific time zone.

Does this bug affect Outlook calendars synced to SharePoint?

Typically, this specific display bug is isolated to the SharePoint Group Calendar Web Part rendering in the browser. The underlying event data in the connected Microsoft 365 Group or Outlook calendar usually remains correct.

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