tzdata rule group
Mongol
Historical rule context · 2 represented zones
A rule group describes recurring clock changes. It is not itself a place or an IANA time-zone identifier.
- First rule
- 1983
- Last rule
- 2016
- Rule entries
- 9
- Source files
- asia
Notes from the time database
Context for this rule
These source notes are preserved from tzdata. They help explain a rule’s period, without adding claims beyond the source.
IATA SSIM (1999-09) says Mongolia no longer observes DST.
Where it appears
Zones using Mongol
Only historically distinct canonical zones from this atlas are listed.
MongoliaOriginal rule fields
Recorded rule entries
Structured directly from tzdata’s Rule lines.
| From | To | Type | In | On | At | Save |
|---|---|---|---|---|---|---|
| 1983 | 1984 | - | Apr | 1 | 0:00 | 1:00 |
| 1983 | only | - | Oct | 1 | 0:00 | 0 |
| 1985 | 1998 | - | Mar | lastSun | 0:00 | 1:00 |
| 1984 | 1998 | - | Sep | lastSun | 0:00 | 0 |
| 2001 | only | - | Apr | lastSat | 2:00 | 1:00 |
| 2001 | 2006 | - | Sep | lastSat | 2:00 | 0 |
| 2002 | 2006 | - | Mar | lastSat | 2:00 | 1:00 |
| 2015 | 2016 | - | Mar | lastSat | 2:00 | 1:00 |
| 2015 | 2016 | - | Sep | lastSat | 0:00 | 0 |