00:00 ART to GMT
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
Greenwich Mean Time
Etc/GMT is currently on GMT (UTC+00:00).
no clock change scheduled — this zone is 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.
Argentina Time
America/Argentina/Buenos_Aires is on UTC-03:00 (UTC-03:00).
no clock change scheduled — fixed at UTC-03:00
Argentina Time is UTC-3 with no daylight saving since 2009, and the whole country runs one clock despite spanning enough longitude for three. Same offset as Brazil's BRT, different rule history.
Best time to call green = 09:00–18:00 on both sides
6 overlapping working hours. The longest run is 09:00–15:00 ART, which is 12:00–18:00 GMT.
ART to GMT, hour by hour 12 August 2026 · every row is a permalink
| ART | GMT | 12-hour | Day | Permalink |
|---|---|---|---|---|
| 00:00 | 03:00 GMT | 3:00 AM | same day | 00:00 → |
| 01:00 | 04:00 GMT | 4:00 AM | same day | 01:00 → |
| 02:00 | 05:00 GMT | 5:00 AM | same day | 02:00 → |
| 03:00 | 06:00 GMT | 6:00 AM | same day | 03:00 → |
| 04:00 | 07:00 GMT | 7:00 AM | same day | 04:00 → |
| 05:00 | 08:00 GMT | 8:00 AM | same day | 05:00 → |
| 06:00 | 09:00 GMT | 9:00 AM | same day | 06:00 → |
| 07:00 | 10:00 GMT | 10:00 AM | same day | 07:00 → |
| 08:00 | 11:00 GMT | 11:00 AM | same day | 08:00 → |
| 09:00 | 12:00 GMT | 12:00 PM | same day | 09:00 → |
| 10:00 | 13:00 GMT | 1:00 PM | same day | 10:00 → |
| 11:00 | 14:00 GMT | 2:00 PM | same day | 11:00 → |
| 12:00 | 15:00 GMT | 3:00 PM | same day | 12:00 → |
| 13:00 | 16:00 GMT | 4:00 PM | same day | 13:00 → |
| 14:00 | 17:00 GMT | 5:00 PM | same day | 14:00 → |
| 15:00 | 18:00 GMT | 6:00 PM | same day | 15:00 → |
| 16:00 | 19:00 GMT | 7:00 PM | same day | 16:00 → |
| 17:00 | 20:00 GMT | 8:00 PM | same day | 17:00 → |
| 18:00 | 21:00 GMT | 9:00 PM | same day | 18:00 → |
| 19:00 | 22:00 GMT | 10:00 PM | same day | 19:00 → |
| 20:00 | 23:00 GMT | 11:00 PM | same day | 20:00 → |
| 21:00 | 00:00 GMT | 12:00 AM | next day | 21:00 → |
| 22:00 | 01:00 GMT | 1:00 AM | next day | 22:00 → |
| 23:00 | 02:00 GMT | 2:00 AM | next day | 23:00 → |