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Changing timezone causes Outlook all-day events to shift

We occasionally receive reports from Outlook on Windows users experiencing a problem with Hebcal calendar events spanning two days. For example, rather than a holiday appearing as an “all-day” event with no particular time, each event appears to be a 24-hour long event that starts at 11pm (23:00) on one day, and end at 11pm on the other day.

The root cause of the problem seems to be when the computer changes time zones. For example, the Hebcal calendar feed was generated for Tel Aviv, but then the computer or Outlook timezone was changed to London, England.

We have been able to reproduce this issue on Windows 11, and the fix involves 3 steps:

  1. Adjusting the computer’s timezone to match the calendar feed timezone
  2. Adjusting Outlook’s timezone to match the calendar feed timezone
  3. Restarting Microsoft Outlook

If you are experiencing this problem, here are a few examples of what settings to look for and adjust:

Outlook.com Jewish holidays download

The following instructions demonstrate how to subscribe to a Hebcal calendar on Outlook.com (sometimes called “Outlook Web”). Outlook.com calendars are used by Windows 10 & 11, Outlook Mac, and Microsoft email accounts such as Hotmail.com, MSN.com and Live.com.

1. Open a web browser on your computer.

2. Fill out the form with your preferences and click the Create Calendar button

3. Click the Download… button

4. Select the Outlook Web option from the Download dialog box. Then click the Add to Outlook.com button.

5. If prompted, login using your Microsoft username and password

6. When Outlook Web prompts you to Subscribe from web, confirm your options (such as color and charm) and then click the Import button

7. For more details, see Import or subscribe to a calendar in Outlook.com from Microsoft’s support site.

Outlook for Microsoft 365 for Mac Jewish holidays download

This page includes instructions on how to subscribe to a Hebcal Jewish holiday calendar 5-year feed in Outlook for Microsoft 365 for Mac, Outlook 2021 for Mac, Outlook 2019 for Mac, and Outlook 2016 for Mac.

Microsoft now recommends that you sync your account to the Microsoft Cloud. “Available for Google, Yahoo, iCloud, and IMAP accounts in Outlook for Mac, this allows you to enjoy many of the best features of Mail and Calendar and Outlook for Mac.”

The following instructions demonstrate how to subscribe to a Hebcal calendar on Outlook.com, and then synchronize those calendars to Outlook for Mac on your desktop.

1. Open a web browser on your macOS computer.

2. Fill out the form with your preferences and click the Create Calendar button

3. Click the Download… button

4. Select the Outlook Web option from the Download dialog box

5. Click the Add to Outlook.com button. This button will take you directly to Microsoft’s Outlook Web calendar import page

6. If prompted, login using your Microsoft username and password

7. When Outlook Web prompts you to Subscribe from web, confirm your options (such as color and charm) and then click the Import button

8. Return to Outlook for Mac on your macOS computer. Go to the Calendar view, then select Tools > Sync

9. Check the box next to the Hebcal calendar in the Other Calendars section on the left side of the page and your events will display

Outlook Mac – delete Hebcal Jewish calendar merged events

Follow these steps to remove Hebcal events from Microsoft Outlook for macOS and you didn’t use the Subscription feature.

1. Open Microsoft Outlook for macOS, and uncheck all calendars except for the one that contains Hebcal events.

2. In the search box on the upper-right, type the text “hebcal” and press Return to select Events that contain “hebcal”

3. Click on the first item in the search results pane on the right. Then, Select All by using ⌘-A (Command-A) on your keyboard. Or, scroll to the bottom, and holding down the Shift key, click on the last item in the search results pane on the right.

4. When prompted Are you sure you want to permanently delete these events? click the Delete button to confirm

Outlook.com – delete Hebcal Jewish calendar

To remove a Hebcal Internet Calendar Subscription from Outlook.com on the Web (for @outlook.com, @hotmail.com, @live.com, and @msn.com email addresses)

This technique will also work with Windows 10 devices (desktops, laptops, tablets and phones) that have a built-in calendar application that connects to Outlook.com

Start by logging into your account at https://outlook.live.com/calendar/

On the left side of the page, under the heading “Other Calendars”, you can see your subscriptions.

Find the Hebcal calendar you wish to remove, click on the three dots (···) and then select “Remove” from the pop-up menu: