GMT to GST converter
GST is 4 hours ahead of GMT right now. Live clocks on both sides, a direct time input, the full 24-hour table with a permalink per hour, and the real daylight-saving state — computed from the IANA tz database on every request, never from a stored offset.
Convert an exact time type it — no sliders
Conversion runs in your browser against the same IANA rules the server uses, so it keeps working offline and nothing you type is sent anywhere.
Daylight saving right now
Gulf Standard Time
Asia/Dubai is currently on UTC+04:00 (UTC+04:00). That is not GST — this page is named for the abbreviation people search for, and tells you the truth about which one is actually in force.
no clock change scheduled — this zone is fixed at UTC+04:00
Gulf Standard Time is UTC+4 year-round. Not to be confused with South Georgia Time, which is UTC-2 and also written GST.
Greenwich Mean Time
Etc/GMT is on GMT (UTC+00:00).
no clock change scheduled — fixed at UTC+00:00
GMT is UTC+0 and never shifts. The UK observes GMT in winter only — in summer it is on BST (UTC+1), so "GMT" on a British invite dated in July usually means BST.
Best time to call green = 09:00–18:00 on both sides
5 overlapping working hours. The longest run is 09:00–14:00 GMT, which is 13:00–18:00 GST.
GMT to GST, hour by hour 13 August 2026 · every row is a permalink
| GMT | GST | 12-hour | Day | Permalink |
|---|---|---|---|---|
| 00:00 | 04:00 UTC+04:00 | 4:00 AM | same day | 00:00 → |
| 01:00 | 05:00 UTC+04:00 | 5:00 AM | same day | 01:00 → |
| 02:00 | 06:00 UTC+04:00 | 6:00 AM | same day | 02:00 → |
| 03:00 | 07:00 UTC+04:00 | 7:00 AM | same day | 03:00 → |
| 04:00 | 08:00 UTC+04:00 | 8:00 AM | same day | 04:00 → |
| 05:00 | 09:00 UTC+04:00 | 9:00 AM | same day | 05:00 → |
| 06:00 | 10:00 UTC+04:00 | 10:00 AM | same day | 06:00 → |
| 07:00 | 11:00 UTC+04:00 | 11:00 AM | same day | 07:00 → |
| 08:00 | 12:00 UTC+04:00 | 12:00 PM | same day | 08:00 → |
| 09:00 | 13:00 UTC+04:00 | 1:00 PM | same day | 09:00 → |
| 10:00 | 14:00 UTC+04:00 | 2:00 PM | same day | 10:00 → |
| 11:00 | 15:00 UTC+04:00 | 3:00 PM | same day | 11:00 → |
| 12:00 | 16:00 UTC+04:00 | 4:00 PM | same day | 12:00 → |
| 13:00 | 17:00 UTC+04:00 | 5:00 PM | same day | 13:00 → |
| 14:00 | 18:00 UTC+04:00 | 6:00 PM | same day | 14:00 → |
| 15:00 | 19:00 UTC+04:00 | 7:00 PM | same day | 15:00 → |
| 16:00 | 20:00 UTC+04:00 | 8:00 PM | same day | 16:00 → |
| 17:00 | 21:00 UTC+04:00 | 9:00 PM | same day | 17:00 → |
| 18:00 | 22:00 UTC+04:00 | 10:00 PM | same day | 18:00 → |
| 19:00 | 23:00 UTC+04:00 | 11:00 PM | same day | 19:00 → |
| 20:00 | 00:00 UTC+04:00 | 12:00 AM | next day | 20:00 → |
| 21:00 | 01:00 UTC+04:00 | 1:00 AM | next day | 21:00 → |
| 22:00 | 02:00 UTC+04:00 | 2:00 AM | next day | 22:00 → |
| 23:00 | 03:00 UTC+04:00 | 3:00 AM | next day | 23:00 → |