Apple announced the release of macOS Big Sur for Thursday, November 12 during its ‘One More Thing‘ event. It’s a huge upgrade that millions of Mac users will want to download ASAP. You will know when it is available in your time zone by clicking the Apple logo in the upper left of your Mac, then clicking ‘About This Mac’ and then clicking ‘Software Update.’ If it still says your Mac is up to date… then macOS Big Sur has not yet been released in your time zone.

So just when will it be available? Mac Rumors provided their best time estimates based on past releases, which is typically 10 AM Pacific Time. We’ve added additional cities:

• Honolulu, Hawaii — 8:00 a.m. HST
• Anchorage, Alaska — 9:00 a.m. AKST
• Cupertino, California — 10:00 a.m. PST
• Los Angeles, California — 10:00 a.m. PST
• San Diego, California — 10:00 a.m. PST
• Seattle, Washington — 10:00 a.m. PST
• Tijuana, Mexico — 10:00 a.m. PST
• Vancouver, Canada — 10:00 a.m. PST
• Phoenix, Arizona — 11:00 a.m. MST
• Denver, Colorado — 11:00 a.m. MST
• Chicago, Illinois — 12:00 noon. CST
• Boston, Massachusetts — 1:00 p.m. EST
• Lexington, Kentucky — 1:00 p.m. EST
• Miami, Florida — 1:00 p.m. EST
• New York, New York — 1:00 p.m. EST
• Washington, D.C. — 1:00 p.m. EST
• Toronto, Canada — 1:00 p.m. EST
• Halifax, Canada — 2:00 p.m. AST
• Rio de Janeiro, Brazil — 3:00 p.m. BRT
• London, United Kingdom — 6:00 p.m. GMT
• Berlin, Germany — 7:00 p.m. CET
• Paris, France — 7:00 p.m. CET
• Cape Town, South Africa — 8:00 p.m. SAST
• Helsinki, Finland — 8:00 p.m. EET
• Moscow, Russia — 9:00 p.m. MSK
• Istanbul, Turkey — 9:00 p.m. TRT
• Dubai, United Arab Emirates — 10:00 p.m. GST
• Delhi, India — 11:30 p.m. IST
• Jakarta, Indonesia — 1:00 a.m. WIB next day
• Shanghai, China — 2:00 a.m. CST next day
• Singapore — 2:00 a.m. SGT next day
• Perth, Australia — 2:00 a.m. AWST next day
• Hong Kong — 2:00 a.m. HKT next day
• Seoul, South Korea — 3:00 a.m. KST next day
• Tokyo, Japan — 3:00 a.m. JST next day
• Brisbane, Australia – 4:00 a.m. AEST next day
• Adelaide, Australia — 4:30 a.m. ACDT next day
• Sydney, Australia — 5:00 a.m. AEDT next day
• Auckland, New Zealand — 7:00 a.m. NZDT next day