Time zone · Europe
AST
Anadyr Standard Time
Anadyr Standard Time (AST) covers Russia's far eastern reaches near the Bering Strait, living permanently on UTC+12 with no daylight saving shifts—so workday rhythms stay simple against dramatic seasonal swings between midnight sun and long winters, and teams elsewhere can schedule meetings without worrying about changing clocks.
Sunday, May 31, 2026
Current offset
UTC+12:00
Standard · +12
Daylight saving
Not observed
Year-round standard time
IANA zones
1
None observe daylight saving
DST offset
—
No summer variant
About AST
A fixed, year-round offset.
Anadyr Standard Time (AST) covers Russia's far eastern reaches near the Bering Strait, living permanently on UTC+12 with no daylight saving shifts—so workday rhythms stay simple against dramatic seasonal swings between midnight sun and long winters, and teams elsewhere can schedule meetings without worrying about changing clocks.
IANA zones · the technical identifiers
The zone that resolve to AST.
For software, always store the IANA identifier — never the abbreviation alone. The database keeps these zones distinct because their rules can, and historically did, diverge.
Where AST is used
One country.
Same offset · UTC+12:00
Other zones at UTC+12:00 right now.
These named zones share AST's offset today. When daylight saving rules differ, they drift apart for part of the year.
Frequently asked questions
Common questions about AST, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- Why doesn’t this region observe daylight saving time in AST?
- Russia eliminated daylight saving transitions in 2011 and has kept stable offsets since, removing seasonal clock changes for regions like Anadyr Standard Time.
- What’s the main zone in AST?
- The primary zone is Asia/Anadyr in Russia, which on timezone.io is used to represent AST’s fixed UTC+12 offset.
- How do workers cope without clocks changing?
- Relying on natural light in summer and artificial lighting in winter simplifies planning, yet some shift hours slightly to align with mainland traffic and shipment windows.
- How do companies outside Russia sync reliably with AST workers?
- Businesses pin meetings to UTC+12 all year with no seasonal adjustment, and local teams often job-share to maintain 24/7 development and operations.
Free · Developer API
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