12:00 UTC to ACST
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Daylight saving right now
Australian Central Standard Time
Australia/Adelaide is currently on ACST (UTC+09:30).
next change: Sun, 4 Oct 2026 03:00 local → ACDT (51 days, clocks go forward)
ACST is UTC+9:30, one of the handful of half-hour offsets still in daily use. Adelaide moves to ACDT (UTC+10:30) in the southern summer; Darwin stays on ACST.
Coordinated Universal Time
UTC is on UTC (UTC+00:00).
no clock change scheduled — fixed at UTC+00:00
UTC is the reference clock every other offset is quoted against. It has no daylight saving and never shifts.
Best time to call green = 09:00–18:00 on both sides
No overlap inside a 09:00–18:00 day on both sides. Someone has to take an early or late slot — the table below shows exactly which hours are least bad.
UTC to ACST, hour by hour 13 August 2026 · every row is a permalink
| UTC | ACST | 12-hour | Day | Permalink |
|---|---|---|---|---|
| 00:00 | 09:30 ACST | 9:30 AM | same day | 00:00 → |
| 01:00 | 10:30 ACST | 10:30 AM | same day | 01:00 → |
| 02:00 | 11:30 ACST | 11:30 AM | same day | 02:00 → |
| 03:00 | 12:30 ACST | 12:30 PM | same day | 03:00 → |
| 04:00 | 13:30 ACST | 1:30 PM | same day | 04:00 → |
| 05:00 | 14:30 ACST | 2:30 PM | same day | 05:00 → |
| 06:00 | 15:30 ACST | 3:30 PM | same day | 06:00 → |
| 07:00 | 16:30 ACST | 4:30 PM | same day | 07:00 → |
| 08:00 | 17:30 ACST | 5:30 PM | same day | 08:00 → |
| 09:00 | 18:30 ACST | 6:30 PM | same day | 09:00 → |
| 10:00 | 19:30 ACST | 7:30 PM | same day | 10:00 → |
| 11:00 | 20:30 ACST | 8:30 PM | same day | 11:00 → |
| 12:00 | 21:30 ACST | 9:30 PM | same day | 12:00 → |
| 13:00 | 22:30 ACST | 10:30 PM | same day | 13:00 → |
| 14:00 | 23:30 ACST | 11:30 PM | same day | 14:00 → |
| 15:00 | 00:30 ACST | 12:30 AM | next day | 15:00 → |
| 16:00 | 01:30 ACST | 1:30 AM | next day | 16:00 → |
| 17:00 | 02:30 ACST | 2:30 AM | next day | 17:00 → |
| 18:00 | 03:30 ACST | 3:30 AM | next day | 18:00 → |
| 19:00 | 04:30 ACST | 4:30 AM | next day | 19:00 → |
| 20:00 | 05:30 ACST | 5:30 AM | next day | 20:00 → |
| 21:00 | 06:30 ACST | 6:30 AM | next day | 21:00 → |
| 22:00 | 07:30 ACST | 7:30 AM | next day | 22:00 → |
| 23:00 | 08:30 ACST | 8:30 AM | next day | 23:00 → |