Convert NZST to ACDT
ACDT is 1 hour 30 minutes behind NZST. NZST is UTC+12 and ACDT is UTC+10:30.
Right now: NZST · ACDT
Best time to schedule a meeting
Standard 9–5 working hours overlap for 6 hours: 11:00 AM–5:00 PM NZST (9:00 AM–3:00 PM ACDT). Schedule meetings inside that window.
| NZST | ACDT | Suitable? |
|---|---|---|
| 9:00 AM | 7:30 AM | outside 9–5 |
| 10:00 AM | 8:30 AM | outside 9–5 |
| 11:00 AM | 9:30 AM | working hours |
| 12:00 PM | 10:30 AM | working hours |
| 1:00 PM | 11:30 AM | working hours |
| 2:00 PM | 12:30 PM | working hours |
| 3:00 PM | 1:30 PM | working hours |
| 4:00 PM | 2:30 PM | working hours |
| 5:00 PM | 3:30 PM | working hours |
NZST to ACDT conversion table
| NZST | ACDT |
|---|---|
| 12:00 AM | 10:30 PM (previous day) |
| 1:00 AM | 11:30 PM (previous day) |
| 2:00 AM | 12:30 AM |
| 3:00 AM | 1:30 AM |
| 4:00 AM | 2:30 AM |
| 5:00 AM | 3:30 AM |
| 6:00 AM | 4:30 AM |
| 7:00 AM | 5:30 AM |
| 8:00 AM | 6:30 AM |
| 9:00 AM | 7:30 AM |
| 10:00 AM | 8:30 AM |
| 11:00 AM | 9:30 AM |
| 12:00 PM | 10:30 AM |
| 1:00 PM | 11:30 AM |
| 2:00 PM | 12:30 PM |
| 3:00 PM | 1:30 PM |
| 4:00 PM | 2:30 PM |
| 5:00 PM | 3:30 PM |
| 6:00 PM | 4:30 PM |
| 7:00 PM | 5:30 PM |
| 8:00 PM | 6:30 PM |
| 9:00 PM | 7:30 PM |
| 10:00 PM | 8:30 PM |
| 11:00 PM | 9:30 PM |
About NZST
New Zealand Standard Time (NZST) is UTC+12. It is used in Auckland and Wellington in the southern winter.
New Zealand Standard Time is UTC+12, the furthest ahead of the commonly used abbreviations, moving to NZDT at UTC+13 from late September to early April. New Zealand is where the date changes first for most of the world's working population, which is why release schedules and financial rollovers are often expressed relative to it. Chatham Islands time, at UTC+12:45, is one of only three quarter-hour offsets in use anywhere.
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.
Does this gap change with the seasons?
Neither NZST nor ACDT shifts with the seasons, so this 1.5-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 NZST in ACDT?
9:00 AM NZST is 7:30 AM ACDT.
Is ACDT ahead of NZST?
ACDT is 1 hour 30 minutes behind NZST.
Which time zone does this use?
NZST is UTC+12 and ACDT is UTC+10:30. 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.