How to Change Microsoft To Do Calendar to Start on Monday
Question details
The user wants to configure Microsoft To Do's due-date and reminder calendars to start on a Monday instead of Sunday.

- Product
- Microsoft To Do
- Device & OS
- not provided
- Scenario
- Setting up task due dates and reminders in Microsoft To Do to align with a Monday-start work week.
- Observed behavior
- The calendar displays a Sunday-to-Saturday layout and does not inherit Outlook's Monday-start configuration.
Please note that Microsoft To Do operates independently of Outlook's calendar view settings. Ensure your app is updated to the latest version to access any newly released features.
Support the Official Feature Request on the Microsoft Feedback Portal
Since Microsoft To Do currently hardcodes the week to start on Sunday, the only actionable step is to vote for the requested change on Microsoft's official feedback platform.
Currently, Microsoft To Do does not feature a built-in toggle to shift the start of the week from Sunday to Monday. Unlike Outlook, which allows extensive calendar customization, To Do utilizes a standardized Sunday-to-Saturday layout for its date pickers.
Microsoft actively monitors its Feedback Portal to prioritize new features based on user demand. Upvoting the specific request for a Monday start day is the most effective way to encourage the development team to implement this change.
Open your web browser and go to the official Microsoft Feedback Portal link dedicated to the To Do calendar week start feature.
Click the 'Sign In' button in the top right corner and enter the credentials for your Microsoft account.
Locate the 'Vote' button next to the community suggestion and click it to register your support. You can also leave a comment detailing why this feature is important for your workflow.

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Frequently Asked Questions
Why doesn't Microsoft To Do sync my Outlook calendar start day?
Microsoft To Do uses a hardcoded Sunday-to-Saturday calendar interface for its due date and reminder pickers. It currently bypasses the custom calendar configurations you may have set in Outlook.
Can I change the start day in the mobile version of Microsoft To Do?
No, the Sunday-to-Saturday week layout is standard across all versions of Microsoft To Do, including the iOS, Android, and Windows desktop applications.
Is there a third-party add-in to fix the To Do calendar layout?
Currently, third-party add-ins cannot modify the core user interface or date picker behavior within the standalone Microsoft To Do application.




