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Daylight Saving Time & Time Zone Blog
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Interim guidance for Manitoba permanent DST 2026

Naveen_Shankar's avatar
Naveen_Shankar
Icon for Microsoft rankMicrosoft
Oct 07, 2026

Microsoft has made a decision about addressing the new time-related change for Manitoba

Editor's note October 13, 2026: Microsoft has released an update to address the new time-related change for Manitoba. Please refer to Manitoba 2026 time zone update available now On September 17, 2...
Updated Oct 27, 2026
Version 5.0
JamesEpp's avatar
JamesEpp
Iron Contributor
Oct 07, 2026

This is very welcome news. Thank you to the MSFT teams for putting this together on short notice.

A lingering question I have is what does this mean for cloud services such as Microsoft 365 (Exchange), Dynamics 365, etc?

I was already exploring bulk methods to update the timezone for all users to a different timezone that reflects permanent UTC-5.

I assume that the timezone "Central Time (US & Canada)" will not be getting any updates, so admins of cloud services still need to take action. Is this true?

PeteSchmuland's avatar
PeteSchmuland
Copper Contributor
Oct 08, 2026

Hey James,

Once the new zone has been implemented in Exchange Online something like:  

Get-Mailbox -ResultSize Unlimited -RecipientTypeDetails UserMailbox | Set-MailboxRegionalConfiguration -TimeZone "Manitoba Standard Time"

Should be sufficient.

  • JamesEpp's avatar
    JamesEpp
    Iron Contributor
    Oct 08, 2026

    Hiya, Pete. :)

    Yeah I don't doubt that will be the case and the Set-MailboxRegionalConfiguration cmdlet (plus the other cmdlet for working hour timezones) is what I'm looking to use.

    My (implied) question for Microsoft is more when this is going to happen, as it's not necessarily the case that all tenants get the update at the same time.

    See you on the 20th.