Add National Holidays to Your Outlook Calendar

To add national holidays to Outlook, use the option for your version: in new Outlook or Outlook on the web, open Calendar and choose Add calendar > Holidays; in classic Outlook for Windows, choose File > Options > Calendar > Add Holidays. Select a country or region, then check the calendar for the dates.

Newer Outlook versions add a separate holiday calendar; classic Outlook imports events into your calendar. Outlook 2010 is now unsupported, so see the note below before relying on its holiday list.

Before you start

• If you see Add calendar in Calendar, use the new Outlook or web steps below. If you see File > Options, use the classic Outlook steps.
• Choose only the country or region you need. A national list may not include every local, employer-specific, or religious observance.
• In classic Outlook, do not reselect a country whose box is already checked; clicking OK again can create duplicates.

For a Microsoft 365 work or school account, Microsoft says adding the holiday calendar through Outlook on the web can provide automatic updates when holidays change. Outlook.com uses a similar flow. See Microsoft’s Outlook holiday-calendar instructions.

Add holidays in new Outlook or Outlook on the web

1. Open Calendar. In new Outlook, select Add calendar below the calendar grid. On the web, select Add calendar in Calendar.



2. Select Holidays, then search or scroll to a country or region. In new Outlook, choose one or more countries and select Add. On the web, select the calendar you want from the results.



3. Check that the holiday calendar appears in your calendar list, then navigate to a month with a known observance. Use its checkbox to show or hide those dates.

To remove a holiday calendar in new Outlook or on the web, right-click it in the navigation pane or open its More options menu. Select Remove and confirm.

If the country you need is not listed, Microsoft describes importing or subscribing to an .ics calendar. Prefer an official government or trusted organization source and verify its dates; Microsoft does not manage third-party calendar content. See Microsoft’s guide to adding calendars in Outlook.com and Outlook on the web.

Add holidays in classic Outlook for Windows

1. Open Calendar, then select File > Options > Calendar.



2. Under Calendar options, select Add Holidays. Check each country or region you want and select OK. If a country is already checked, its holidays are present; selecting OK again can add duplicates.



3. Return to Calendar and open a month with a holiday to confirm the imported all-day event appears.

Remove duplicate holidays in classic Outlook

Classic Outlook imports holiday events into the calendar instead of keeping a separate holiday calendar to hide. To remove duplicates or unwanted dates, choose View > Change View > List, then choose Categories in the Arrangement group. Find the Holidays category, select the entries for the country you want to remove, and choose Home > Delete. Holiday entries are grouped by location. Return to the calendar with View > Change View > Calendar.

Check late 2026 and 2027 holiday dates

Microsoft’s current holiday instructions say the built-in holiday information for Outlook for Microsoft 365, Outlook 2019, and Outlook 2016 covers Gregorian years 2016–2026. A separate Microsoft issue notice, last updated September 4, 2026, reports that some public calendars are missing dates in the second half of 2026 or in 2027 across Outlook on the web, new Outlook, and classic Outlook. Reports include the United States, United Kingdom, Japan, India, China, and Singapore, among other regions.

For travel, payroll, school, or business closures, verify important dates against an official government or regional calendar. Microsoft lists organization-maintained calendars and verified third-party .ics subscriptions as workarounds; deleting and re-importing may help an individual calendar but is not a guaranteed fix. Read Microsoft’s notice about missing public-holiday dates.

Outlook 2010: a legacy option

The classic menu path above may also appear in Outlook 2010, but Office 2010 reached end of support on October 13, 2020. Microsoft’s current holiday guide does not list Outlook 2010 as a supported version. Its Add Holidays button may still work with the data installed on that computer, but the holiday list can be outdated and the application no longer receives Microsoft support or security fixes. Use a current Outlook version or verify dates with an official calendar. Microsoft’s Office 2010 lifecycle notice gives the end-of-support date.