March 25, 11:00am MST

Calendar users in Chile's Aysén region need to update the time zone for all events taking place after 2025-04-05 which are impacted by the new DST rules. On 2025-03-20, Chile's Aysén region adopted a new time zone (IANA: "America/Coyhaique”). This time zone will diverge from the continental Chile time zone “Chile Time” (IANA: “America/Santiago”) after 2025-04-05, by staying at UTC-03. Users in, or operating in, the Aysén region will be impacted: their events taking place after 2025-04-05 will be, by default, in the Chile time zone and will diverge by one hour compared to the new Aysén region local time. Impacted users are recommended to take 2 actions as soon as possible: * Go to Calendar Settings > General > Time zone and set their Primary time zone to “Punta Arenas time” (IANA: "America/Punta_Arenas”). * Update all their events taking place after 2025-04-05 in this region to the “Punta Arenas time”. Additionally, we are working on introducing a new time zone for the Aysén region. We will post a communication update when it will be available in Calendar. We will provide an update by Friday, 2025-04-04 13:00 US/Pacific with current details. If impacted users don’t take action, after 2025-04-05 their calendar will: * Show the wrong time with the “Now” red line on Calendar Web; * Display all events shifted by one hour; * Create new events in the wrong time zone.

March 25, 11:00am MST

Calendar users in Chile's Aysén region need to update the time zone for all events taking place after 2025-04-05 which are impacted by the new DST rules. On 2025-03-20, Chile's Aysén region adopted a new time zone (IANA: "America/Coyhaique”). This time zone will diverge from the continental Chile time zone “Chile Time” (IANA: “America/Santiago”) after 2025-04-05, by staying at UTC-03. Users in, or operating in, the Aysén region will be impacted: their events taking place after 2025-04-05 will be, by default, in the Chile time zone and will diverge by one hour compared to the new Aysén region local time. Impacted users are recommended to take 2 actions as soon as possible: * Go to Calendar Settings > General > Time zone and set their Primary time zone to “Punta Arenas time” (IANA: "America/Punta_Arenas”). * Update all their events taking place after 2025-04-05 in this region to the “Punta Arenas time”. Additionally, we are working on introducing a new time zone for the Aysén region. We will post a communication update when it will be available in Calendar. We will provide an update by Friday, 2025-04-04 13:00 US/Pacific with current details. If impacted users don’t take action, after 2025-04-05 their calendar will: * Show the wrong time with the “Now” red line on Calendar Web; * Display all events shifted by one hour; * Create new events in the wrong time zone.

April 03, 9:35am MST

**Summary** Calendar users in Chile's Aysén region need to update the time zone for all events taking place after 2025-04-05 which are impacted by the new DST rules. **Description** The new timezone, "Coyhaique”, introduced for Chile's Aysén region is now available in Calendar. On 2025-03-20, Chile's Aysén region adopted a new time zone (IANA: "America/Coyhaique”). This time zone will diverge from the continental Chile time zone “Chile Time” (IANA: “America/Santiago”) after 2025-04-05, by staying at UTC-03. Users in, or operating in, the Aysén region that have not already switched to "Punta Arenas time” will be impacted: their events taking place after 2025-04-05 will be, by default, in the Chile time zone and will diverge by one hour compared to the new Aysén region local time. Impacted users are recommended to take 2 actions as soon as possible: **1)** Go to Calendar Settings > General > Time zone and set their Primary time zone to “Coyhaique” (IANA: "America/Coyhaique”). **2)** Update all their events taking place after 2025-04-05 in this region to the “Coyhaique”. Users that have updated their settings to "Punta Arenas time” should update to the new "Coyhaique” to ensure that potential future changes to the local time are correctly applied. The name "Coyhaique” for the new time zone is provisional and may change in the future. Calendar users on Android and iOS devices should use “Punta Arenas time” until their operating system is updated to have the new time zone. **Diagnosis** If impacted users don’t take action and are still using “Chile time”, after 2025-04-05 their calendar: - Show the wrong time with the “Now” red line on Calendar Web; - Display all events shifted by one hour; - Create new events in the wrong time zone. Users that updated to "Punta Arenas time” should not see any disruption, but not updating to "Coyhaique” would expose them to disruption should the two time zones diverge in the future. **Workaround** Impacted users that still use "Chile time” should take the 2 actions described above. Impacted users that applied the previously suggested fix should update to "Coyhaique” when convenient.