Convert ACST to EAT
EAT is 6 hours 30 minutes behind ACST. ACST is UTC+9:30 and EAT is UTC+3.
Right now: ACST · EAT
Best time to schedule a meeting
Standard 9–5 working hours overlap for 1 hour: 4:00 PM–5:00 PM ACST (9:00 AM–10:00 AM EAT). Schedule meetings inside that window.
| ACST | EAT | Suitable? |
|---|---|---|
| 9:00 AM | 2:30 AM | outside 9–5 |
| 10:00 AM | 3:30 AM | outside 9–5 |
| 11:00 AM | 4:30 AM | outside 9–5 |
| 12:00 PM | 5:30 AM | outside 9–5 |
| 1:00 PM | 6:30 AM | outside 9–5 |
| 2:00 PM | 7:30 AM | outside 9–5 |
| 3:00 PM | 8:30 AM | outside 9–5 |
| 4:00 PM | 9:30 AM | working hours |
| 5:00 PM | 10:30 AM | working hours |
ACST to EAT conversion table
| ACST | EAT |
|---|---|
| 12:00 AM | 5:30 PM (previous day) |
| 1:00 AM | 6:30 PM (previous day) |
| 2:00 AM | 7:30 PM (previous day) |
| 3:00 AM | 8:30 PM (previous day) |
| 4:00 AM | 9:30 PM (previous day) |
| 5:00 AM | 10:30 PM (previous day) |
| 6:00 AM | 11:30 PM (previous day) |
| 7:00 AM | 12:30 AM |
| 8:00 AM | 1:30 AM |
| 9:00 AM | 2:30 AM |
| 10:00 AM | 3:30 AM |
| 11:00 AM | 4:30 AM |
| 12:00 PM | 5:30 AM |
| 1:00 PM | 6:30 AM |
| 2:00 PM | 7:30 AM |
| 3:00 PM | 8:30 AM |
| 4:00 PM | 9:30 AM |
| 5:00 PM | 10:30 AM |
| 6:00 PM | 11:30 AM |
| 7:00 PM | 12:30 PM |
| 8:00 PM | 1:30 PM |
| 9:00 PM | 2:30 PM |
| 10:00 PM | 3:30 PM |
| 11:00 PM | 4:30 PM |
About ACST
Australian Central Standard Time (ACST) is UTC+9:30. It is used in Adelaide and Darwin in winter.
Australian Central Standard Time is UTC+9:30, half an hour behind the eastern states rather than a whole hour, which surprises people every time. South Australia moves to daylight saving in October and the Northern Territory does not, so Adelaide and Darwin share this offset for half the year and are an hour apart for the other half.
About EAT
East Africa Time (EAT) is UTC+3. It is used in Kenya, Tanzania, Ethiopia, Uganda and Somalia.
East Africa Time is UTC+3 and fixed. Nairobi, Addis Ababa and Dar es Salaam all keep it. Ethiopia additionally uses a clock that counts from dawn rather than midnight for everyday purposes, six hours off the international one, so a time given locally in Addis may need converting twice rather than once.
Does this gap change with the seasons?
Neither ACST nor EAT shifts with the seasons, so this 6.5-hour difference holds all year. That is unusual enough to be worth relying on: most cross-continental gaps move twice a year.
This is the reason scheduling systems store an IANA zone such as Region/City rather than an offset or an abbreviation: the zone knows its own rules and the offset does not.
Frequently asked questions
What time is 9:00 AM ACST in EAT?
9:00 AM ACST is 2:30 AM EAT.
Is EAT ahead of ACST?
EAT is 6 hours 30 minutes behind ACST.
Which time zone does this use?
ACST is UTC+9:30 and EAT is UTC+3. Both abbreviations denote a single fixed offset, so this conversion never shifts with daylight saving — what changes is which abbreviation a place is using at the time.