Mongolia time zone history
Mongolia has 2 zones of its own in the tz database. Standard times run from UTC+7 (Hovd) to UTC+8 (Ulaanbaatar), a spread of 1 hour. None of the 2 zones changes clocks today; the last seasonal change in any of them was in 2016.
The 2 zones of Mongolia since 1970
Zones at a glance
| Zone | Area covered | Standard time | Clock changes today | New standard times since 1970 |
|---|---|---|---|---|
| Ulaanbaatar | Mongolia (most areas) | UTC+8 | no, last in 2016 | 1 |
| Hovd | Bayan-Ölgii, Khovd and Uvs | UTC+7 | no, last in 2016 | 1 |
What sets each zone apart
- Ulaanbaatar: Daylight saving time was used in 24 years since 1970, last in 2016; under the current rules the clocks no longer change. On standard time, clocks at Ulaanbaatar run 52 minutes ahead of local mean solar time, the third-largest gap of the 9 zones on UTC+8 standard time whose clocks run ahead of the sun.
- Hovd: Daylight saving time was used in 24 years since 1970, last in 2016; under the current rules the clocks no longer change.
How the zones compare with Ulaanbaatar since 1970
- Hovd: usually 1 hour behind Ulaanbaatar; different on 2 days in 1977, 1983–1998, 2001–2006, 2015 and 2016.
Every change of standard time since 1970
2 changes across the 2 zones, oldest first.
- January 1, 1978 Hovd: UTC+6 to UTC+7
- January 1, 1978 Ulaanbaatar: UTC+7 to UTC+8