Apple will release iOS 27 on Monday, September 14, with the update expected to arrive around 10:00 a.m. Pacific Time / 1:00 p.m. Eastern Time. iOS 27 will bring more advanced Siri AI capabilities alongside other refinements, improvements and new features for iPhones. macOS Golden Gate and other releases in the OS 27 family are also scheduled to drop around the same time.
Apple’s websites for countries around the world point to a 10:00 a.m. Pacific Time release. Based on past releases, the update is likely to go live at about 10:00 a.m. PT / 1:00 p.m. ET. Apple’s pages for India list a September 14 launch while pages for Singapore, Hong Kong and others in that region list a September 15 release, indicating a narrow release window timed to align with local dates where it will already be after midnight.
iOS 27 rollout schedule by time zone
Australia (Western) – 1:00 a.m. AWST (Tues)
Australia (Eastern) – 3:00 a.m. AEST (Tues)
Austria – 7:00 p.m. CEST
Baltic countries – 8:00 p.m. EEST
Belgium – 7:00 p.m. CEST
Brazil East – 2:00 p.m. BRT
Canada (Pacific) – 10:00 a.m. PDT
Canada (Eastern) – 1:00 p.m. EDT
Canada (Atlantic) – 2:00 p.m. ADT
China – 1:00 a.m. CST (Tues)
Denmark – 7:00 p.m. CEST
Finland – 8:00 p.m. EEST
France – 7:00 p.m. CEST
Germany – 7:00 p.m. CEST
Hong Kong – 1:00 a.m. HKT (Tues)
India – 10:30 p.m. IST
Indonesia (Western) – midnight WIB (Tues)
Ireland – 6:00 p.m. IST
Italy – 7:00 p.m. CEST
Japan – 2:00 a.m. JST (Tues)
Luxembourg – 7:00 p.m. CEST
Netherlands – 7:00 p.m. CEST
New Zealand – 5:00 a.m. NZST (Tues)
Norway – 7:00 p.m. CEST
Poland – 7:00 p.m. CEST
Portugal – 6:00 p.m. WEST
Puerto Rico – 1:00 p.m. AST
Saudi Arabia – 8:00 p.m. AST
Singapore – 1:00 a.m. SGT (Tues)
South Africa – 7:00 p.m. SAST
South Korea – 2:00 a.m. KST (Tues)
Spain – 7:00 p.m. CEST
Sweden – 7:00 p.m. CEST
Switzerland – 7:00 p.m. CEST
Taiwan – 1:00 a.m. CST (Tues)
UAE – 9:00 p.m. GST
United Kingdom – 6:00 p.m. BST
United States (Pacific) – 10:00 a.m. PDT
United States (Mountain) – 11:00 a.m. MDT
United States (Central) – noon CDT
United States (Eastern) – 1:00 p.m. EDT
This list isn’t exhaustive, so verify the exact time for your specific location. There could also be a delay as Apple prepares its servers for the rollout.
Be prepared to wait
When iOS 27 and iPadOS 27 become available as an over-the-air update, make sure your device is fully charged and connected to Wi‑Fi, as the process may take some time. To check for the update, go to Settings ➝ General ➝ Software Update and wait a moment for your device to contact Apple’s servers. If you prefer, you can wait for iOS 27 to be delivered to your iPhone the next time you plug it into your computer.
During the initial rollout of major updates like iOS 27, users may experience slower download speeds and sluggish performance when trying to update due to high demand on Apple’s servers. To avoid potential issues from server congestion, you may want to wait a day or two before installing the update.
