Time zone · Americas
WGST
West Greenland Summer Time
West Greenland Summer Time (WGST) covers Greenland’s most populated area around Nuuk, where daily life and business follow the Atlantic rhythm of UTC−01:00 during the bright summer months. Clocks move forward on the last Sunday in March and back on the last Sunday in October, on the same dates as the European Union.
Wednesday, October 14, 2026
Current offset
UTC-01:00
Daylight · -01
Daylight saving
Active
Reverts 24 Oct 2026
IANA zones
1
1 observe DST, 0 don't
DST offset
—
No summer variant
About WGST
Standard time, with a summer shift.
West Greenland Summer Time (WGST) covers Greenland’s most populated area around Nuuk, where daily life and business follow the Atlantic rhythm of UTC−01:00 during the bright summer months. Clocks move forward on the last Sunday in March and back on the last Sunday in October, on the same dates as the European Union.
IANA zones · the technical identifiers
The zone that resolve to WGST.
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 WGST
Local time, city by city.
1 city
Where WGST is used
One country.
Same offset · UTC-01:00
Other zones at UTC-01:00 right now.
These named zones share WGST's offset today. When daylight saving rules differ, they drift apart for part of the year.
Convert
WGST to the world's clocks.
Frequently asked questions
Common questions about WGST, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- West Greenland Summer Time sounds specific—does it cover all of Greenland?
- WGST is used to describe the summer (daylight‑saving) offset on Greenland’s west coast centered on Nuuk; most inhabited parts of Greenland follow the same pattern.
- Is WGST the same year‑round?
- No. It’s a daylight‑saving period: clocks move forward in late March and back in late October, on the same weekends as the European Union.
- What’s the time difference between WGST and UTC?
- WGST is UTC−01:00. In winter, Nuuk is on UTC−02:00.
- Why does Greenland observe daylight saving?
- It adjusts clocks to better match daylight hours in a region with extreme seasonal changes in sunlight.
- How many member zones does WGST have?
- Just one main zone is listed, centered on Nuuk in Greenland.
- When do clocks change in WGST?
- Clocks go forward to WGST on the last Sunday in March and back to standard time on the last Sunday in October.
- Is WGST the same as Iceland or Atlantic time?
- No. Iceland stays on UTC+00:00 all year, and Atlantic Time in Canada is UTC−04:00 (UTC−03:00 in summer). WGST is UTC−01:00.
- What country does WGST represent?
- The member country shown is Greenland.
- When is WGST in use?
- From late March to late October, when Nuuk moves from UTC−02:00 to UTC−01:00 for daylight saving time.
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.
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