GST is used for 2 different time zones. The table below shows each one with its offset and current time.
What GST can mean
Abbreviations are not standardised, and the same letters can stand for zones hours apart. When a message says GST, check the sender’s country or ask for the city.
| Name | UTC offset | Time now | Used in |
|---|---|---|---|
| Gulf Standard Time | UTC+4 | --:-- | Asia/Dubai, Asia/Muscat |
| South Georgia Time | UTC−2 | --:-- | Atlantic/South_Georgia |
Where and when GST is used
| IANA time zone | Uses GST | Main cities |
|---|---|---|
| Asia/Dubai | All year | Dubai, Abu Dhabi, Sharjah |
| Asia/Muscat | All year | Muscat, Seeb, Bawshar |
| Atlantic/South_Georgia | All year | Grytviken |
Tools for time in GST
- Convert a time to or from GST: pick a date and time and see it in every city on your list.
- Add Dubai to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in GST and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
Which time zone does GST mean?
It depends on who wrote it. Gulf Standard Time (UTC+4): Dubai and Muscat; South Georgia Time (UTC−2): Grytviken. Ask for a city or a UTC offset if the context does not make it clear.
What time is 12:00 GST in UTC?
12:00 GST is 8:00 AM UTC.
Time zone rules: IANA tz database, version 2026e. Place names and coordinates: GeoNames. Sunrise and sunset are calculated from the coordinates and can differ by a minute or two from local almanacs.