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Freedom251 › Blog › Date and time

How to Set the First Day of the Week in Windows 11

By Freedom251 Team · · 1 min read

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To change which day Windows 11 treats as the start of the week, open Settings > Time & language > Language & region > Regional format > Change formats, then choose a day from First day of week. This is a Windows regional-format preference; calendar apps such as Outlook can have a separate setting.

Change the first day of the week in Windows 11

  1. Open Start > Settings.
  2. Select Time & language > Language & region.
  3. Expand Regional format.
  4. Select Change formats.
  5. Open First day of week and select the day you want.

This navigation and control name are reported by iTechGuides’ Windows 11 guide. Microsoft’s documentation explains that Windows uses locale-aware date and time formatting, but the exact click path above is not documented in the Microsoft sources cited here. If labels differ on your Windows build, look for the first-day option in the Regional format settings. Microsoft Learn: Locale information

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What this setting changes—and what it does not

The preference belongs to Windows regional formatting, which informs formatting behavior in Windows apps. It is distinct from an individual calendar app’s settings, so changing the Windows value may not change the first day shown inside every calendar.

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Microsoft documents a separate first-day-of-week control in Outlook on the web, and separate calendar controls for new Outlook and classic Outlook. If Outlook’s calendar still starts on a different day, adjust its calendar settings as well. Outlook on the web calendar settings · Outlook first-day-of-week settings

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Date and timeOutlookWindows 11Windows Settings

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