Time zone · Europe
OST
Omsk Standard Time
Omsk Standard Time (OST, UTC+06:00) covers Russia’s Omsk region in southwestern Siberia. It has no daylight saving, so the clock stays on UTC+06:00 all year.
Thursday, October 15, 2026
Current offset
UTC+06:00
Standard · +06
Daylight saving
Not observed
Year-round standard time
IANA zones
1
None observe daylight saving
DST offset
—
No summer variant
About OST
A fixed, year-round offset.
Omsk Standard Time (OST, UTC+06:00) covers Russia’s Omsk region in southwestern Siberia. It has no daylight saving, so the clock stays on UTC+06:00 all year.
IANA zones · the technical identifiers
The zone that resolve to OST.
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.
Cities across OST
Local time, city by city.
1 city
Where OST is used
One country.
Same offset · UTC+06:00
Other zones at UTC+06:00 right now.
These named zones share OST's offset today. When daylight saving rules differ, they drift apart for part of the year.
Convert
OST to the world's clocks.
Frequently asked questions
Common questions about OST, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- Does Omsk Standard Time ever change for daylight saving?
- No. Omsk does not observe daylight saving—its offset has been fixed at UTC+06:00 since 2014, so meeting times stay predictable all year.
- Which major region or territory uses OST?
- OST is used in Russia’s Omsk Oblast.
- When did Omsk switch to today’s fixed UTC+06:00 time?
- Omsk moved to UTC+06:00 on October 26, 2014, after three and a half years on permanent UTC+07:00. Seasonal clock changes had already ended in March 2011.
- Does Omsk share its UTC+06:00 offset with any other time zones?
- Yes. Several other regions and countries use UTC+06:00 during standard time, making Omsk easy to align with in regional projects and calls.
- How does not changing clocks affect daily life in Omsk?
- Fixed clocks mean sunrise and sunset shift gradually through the year without sudden one‑hour jumps, simplifying school schedules, transport, and TV programming.
- Will there be future clock changes in Omsk?
- Based on current policy, there are no scheduled transitions; Omsk’s time is expected to remain at UTC+06:00 without daylight saving or other adjustments.
Source: IANA tzdb2026d · Reviewed
Free · Developer API
This time zone, as JSON.
Its defining offset, DST status and member counts, from one endpoint.
Also in the API: time zones by coordinates, conversions that flag daylight saving gaps, and abbreviations decoded.
Moving off WorldTimeAPI? Our drop-in replacement needs no key.