ACDT (Australian Central Daylight Time) is UTC+10:30. It is the daylight saving time of ACST and is in use now in Adelaide.
Who uses ACDT
| IANA time zone | Uses ACDT | Main cities |
|---|---|---|
| Australia/Adelaide | During daylight saving time | Adelaide |
ACDT and ACST
ACDT is the summer version of ACST, 1 hour ahead of it. People often write ACST all year, which is wrong for the daylight saving months; a city name avoids the problem.
Convert ACDT to other time zones
ACDT is a fixed offset, so these conversions do not change with the seasons. What changes is which abbreviation a region is using on a given date.
| Zone | UTC offset | When it is 12:00 ACDT |
|---|---|---|
| UTC | UTC+0 | 1:30 AM |
| GMT | UTC+0 | 1:30 AM |
| EST | UTC−5 | 8:30 PM (previous day) |
| EDT | UTC−4 | 9:30 PM (previous day) |
| CST | UTC−6 | 7:30 PM (previous day) |
| MST | UTC−7 | 6:30 PM (previous day) |
| PST | UTC−8 | 5:30 PM (previous day) |
| CET | UTC+1 | 2:30 AM |
| CEST | UTC+2 | 3:30 AM |
| EET | UTC+2 | 3:30 AM |
| MSK | UTC+3 | 4:30 AM |
| GST | UTC+4 | 5:30 AM |
| IST | UTC+5:30 | 7:00 AM |
| ICT | UTC+7 | 8:30 AM |
| JST | UTC+9 | 10:30 AM |
| AEST | UTC+10 | 11:30 AM |
| AEDT | UTC+11 | 12:30 PM |
Tools for time in ACDT
- Convert a time to or from ACDT: pick a date and time and see it in every city on your list.
- Add Adelaide to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in ACDT and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What is ACDT in UTC?
ACDT is UTC+10:30. To get UTC, subtract 10 hours 30 minutes from ACDT time.
Is it ACDT or ACST right now?
ACDT is in use now in Adelaide. ACST returns on Sunday, April 4, 2027.
What time is 12:00 ACDT in UTC?
12:00 ACDT is 1:30 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.