check before: 2025-04-01
Product:
Office 365 general
Platform:
Online, World tenant
Status:
Change type:
Admin impact
Links:
Details:
On April 5, 2025, the Aysén region in Chile will remain on permanent Daylight Saving Time (DST), UTC-03, joining the Magallanes region. Please note that only the Aysén region is affected by this change, while other regions of Chile remain unaffected. This change will diverge from the America/Santiago time zone and create a new zone, America/Coyhaique.
When will this happen:
On April 5, 2025, the Aysén Region in Chile, will stay in permanent Daylight Saving Time (DST), UTC-03. Microsoft plans to release an update to support this change in the April 2025 Windows security update.
Change Category:
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Scope:
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Release Phase:
Created:
2025-04-02
updated:
2025-04-02
Task Type
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MS How does it affect me
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MS Preperations
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MS Urgency
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summary for non-techies**
On April 5, 2025, the Aysén region of Chile will switch to permanent Daylight Saving Time (UTC-03), creating a new time zone called America/Coyhaique, and until Microsoft updates the system, users can manually adjust their Windows devices to the "(UTC-3) Punta Arenas" time zone to maintain accurate local time.
Direct effects for Operations**
Incorrect Time Display
Users in the Aysén region will experience incorrect time on their devices until the April 2025 Windows security update is installed, leading to scheduling issues and confusion.
- roles: End Users, IT Support
- references: https://techcommunity.microsoft.com/blog/DSTBlog/interim-guidance-for-chile-dst-changes-2025/4399732, https://techcommunity.microsoft.com/t5/windows-it-pro-blog/how-windows-manages-time-zone-changes/ba-p/3852632
Increased Support Requests
The change will likely lead to an increase in support requests from users experiencing time-related issues, putting additional strain on IT support resources.
- roles: IT Support, System Administrators
- references: https://techcommunity.microsoft.com/blog/DSTBlog/interim-guidance-for-chile-dst-changes-2025/4399732, https://techcommunity.microsoft.com/t5/daylight-saving-time-time-zone/bg-p/DSTBlog
Configutation Options**
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explanation for non-techies**
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Last updated 2 weeks ago
