New Outlook and Outlook Mobile incorrectly display British Columbia meetings after November 2026

Clement Wee 5 Reputation points
2026-08-10T02:55:26.5666667+00:00

Description

British Columbia adopted permanent year-round daylight saving time in 2026 and no longer falls back one hour in November. After testing Outlook clients, I found inconsistent handling of Pacific/Vancouver meetings after Nov. 1, 2026.

Environment

  • Microsoft 365 mailbox
  • macOS 26.5.2
  • New Outlook for Mac
  • Legacy Outlook for Mac
  • Outlook Mobile
  • Outlook Web

Reproduction Steps

  1. Create a meeting in Outlook Web.
  2. Date: November 3, 2026.
  3. Time: 9:00 AM to 10:00 AM.
  4. Time Zone: Pacific Time (UTC-8).
  5. Save the meeting.

Observed Results

  • Outlook Web: Calendar grid shows 9:00 AM; details show 9:00-10:00 AM Pacific Time (UTC-8).
  • Legacy Outlook: Calendar grid shows 9:00 AM; details show 9:00-10:00 AM Pacific Time (UTC-8).
  • New Outlook: Calendar grid shows 10:00 AM; details show 9:00-10:00 AM Pacific Time (UTC-8).
  • Outlook Mobile: Calendar grid shows 10:00 AM; details show 10:00-11:00 AM PDT.

Expected Result All Outlook clients should display the same meeting time and use consistent timezone logic for British Columbia after the province's adoption of permanent year-round UTC-7 time.

[Duplicated content removed]

Moved from Microsoft 365 and Office | Other

Outlook | Web | Outlook.com | Calendar
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1 answer

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  1. Ian-T 13,280 Reputation points Microsoft External Staff Moderator
    2026-08-10T07:46:27.4233333+00:00

    Please note that this is a user-to-user support forum. Moderators and contributors, including external Microsoft employees, are not allowed to directly interfere with Microsoft product features or access back-end systems. Our role is limited solely to providing technical guidance on reported incidents, requests, or ideas. 

    Hi Clement Wee

    Thank you for documenting the behavior so clearly.

    One important distinction is that British Columbia will remain on UTC-7 after November 1, 2026, while the traditional Pacific Time zone changes to UTC-8. This means a meeting created specifically for 9:00 AM Pacific Time (UTC-8) would appear as 10:00 AM in British Columbia (UTC-7)

    For your reference: https://www2.gov.bc.ca/gov/content/governments/celebrating-british-columbia/daylight-saving-time
    Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate and safe information. Watch out for ads on the site that may advertise products frequently classified as PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it. 

    However, the difference between the calendar grid and the meeting details within the same Outlook client is inconsistent and may indicate that the updated British Columbia time-zone rules are not being applied uniformly.

    If the inconsistency continues, please report it through Outlook’s in-app support or ask the Microsoft 365 administrator (if you are using work/school account) to open a support request.

    Thank you so much for your detailed testing and time. Hope you have a great day

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