Convert ACDT to SGT
SGT is 2 hours 30 minutes behind ACDT. ACDT is UTC+10:30 and SGT is UTC+8.
Right now: ACDT · SGT
Best time to schedule a meeting
Standard 9–5 working hours overlap for 5 hours: 12:00 PM–5:00 PM ACDT (9:00 AM–2:00 PM SGT). Schedule meetings inside that window.
| ACDT | SGT | Suitable? |
|---|---|---|
| 9:00 AM | 6:30 AM | outside 9–5 |
| 10:00 AM | 7:30 AM | outside 9–5 |
| 11:00 AM | 8:30 AM | outside 9–5 |
| 12:00 PM | 9:30 AM | working hours |
| 1:00 PM | 10:30 AM | working hours |
| 2:00 PM | 11:30 AM | working hours |
| 3:00 PM | 12:30 PM | working hours |
| 4:00 PM | 1:30 PM | working hours |
| 5:00 PM | 2:30 PM | working hours |
ACDT to SGT conversion table
| ACDT | SGT |
|---|---|
| 12:00 AM | 9:30 PM (previous day) |
| 1:00 AM | 10:30 PM (previous day) |
| 2:00 AM | 11:30 PM (previous day) |
| 3:00 AM | 12:30 AM |
| 4:00 AM | 1:30 AM |
| 5:00 AM | 2:30 AM |
| 6:00 AM | 3:30 AM |
| 7:00 AM | 4:30 AM |
| 8:00 AM | 5:30 AM |
| 9:00 AM | 6:30 AM |
| 10:00 AM | 7:30 AM |
| 11:00 AM | 8:30 AM |
| 12:00 PM | 9:30 AM |
| 1:00 PM | 10:30 AM |
| 2:00 PM | 11:30 AM |
| 3:00 PM | 12:30 PM |
| 4:00 PM | 1:30 PM |
| 5:00 PM | 2:30 PM |
| 6:00 PM | 3:30 PM |
| 7:00 PM | 4:30 PM |
| 8:00 PM | 5:30 PM |
| 9:00 PM | 6:30 PM |
| 10:00 PM | 7:30 PM |
| 11:00 PM | 8:30 PM |
About ACDT
Australian Central Daylight Time (ACDT) is UTC+10:30. It is used in Adelaide in summer.
Australian Central Daylight Time is UTC+10:30, what South Australia keeps from October to April. Darwin stays on ACST through the summer, so for those months two cities in the same nominal zone are an hour apart — the only reason to be precise about which of the two abbreviations a meeting invitation carries.
About SGT
Singapore Time (SGT) is UTC+8. It is used in Singapore and Malaysia.
Singapore Time is UTC+8 with no daylight saving. The offset is a historical curiosity: Singapore sits at about 104°E, which is geographically UTC+7, and moved to +8 in 1982 to align with Malaysia and Hong Kong for trade. The result is that the sun is at its highest around 1pm rather than noon, and sunrise is late all year.
Does this gap change with the seasons?
Neither ACDT nor SGT shifts with the seasons, so this 2.5-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 ACDT in SGT?
9:00 AM ACDT is 6:30 AM SGT.
Is SGT ahead of ACDT?
SGT is 2 hours 30 minutes behind ACDT.
Which time zone does this use?
ACDT is UTC+10:30 and SGT is UTC+8. 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.