Convert GST to NZDT
NZDT is 9 hours ahead of GST. GST is UTC+4 and NZDT is UTC+13.
Right now: GST · NZDT
Best time to schedule a meeting
Standard 9–5 working hours do not overlap at all between GST and NZDT. Someone has to take an early or late call — or use asynchronous communication instead.
| GST | NZDT | Suitable? |
|---|---|---|
| 9:00 AM | 6:00 PM | outside 9–5 |
| 10:00 AM | 7:00 PM | outside 9–5 |
| 11:00 AM | 8:00 PM | outside 9–5 |
| 12:00 PM | 9:00 PM | outside 9–5 |
| 1:00 PM | 10:00 PM | outside 9–5 |
| 2:00 PM | 11:00 PM | outside 9–5 |
| 3:00 PM | 12:00 AM (next day) | outside 9–5 |
| 4:00 PM | 1:00 AM (next day) | outside 9–5 |
| 5:00 PM | 2:00 AM (next day) | outside 9–5 |
GST to NZDT conversion table
| GST | NZDT |
|---|---|
| 12:00 AM | 9:00 AM |
| 1:00 AM | 10:00 AM |
| 2:00 AM | 11:00 AM |
| 3:00 AM | 12:00 PM |
| 4:00 AM | 1:00 PM |
| 5:00 AM | 2:00 PM |
| 6:00 AM | 3:00 PM |
| 7:00 AM | 4:00 PM |
| 8:00 AM | 5:00 PM |
| 9:00 AM | 6:00 PM |
| 10:00 AM | 7:00 PM |
| 11:00 AM | 8:00 PM |
| 12:00 PM | 9:00 PM |
| 1:00 PM | 10:00 PM |
| 2:00 PM | 11:00 PM |
| 3:00 PM | 12:00 AM (next day) |
| 4:00 PM | 1:00 AM (next day) |
| 5:00 PM | 2:00 AM (next day) |
| 6:00 PM | 3:00 AM (next day) |
| 7:00 PM | 4:00 AM (next day) |
| 8:00 PM | 5:00 AM (next day) |
| 9:00 PM | 6:00 AM (next day) |
| 10:00 PM | 7:00 AM (next day) |
| 11:00 PM | 8:00 AM (next day) |
About GST
Gulf Standard Time (GST) is UTC+4. It is used in Dubai, Abu Dhabi and Muscat.
Gulf Standard Time is UTC+4, covering the United Arab Emirates and Oman, and there is no daylight saving anywhere on the Arabian peninsula. The scheduling complication in the region is not the clock but the week: the UAE moved its weekend to Saturday–Sunday in 2022, while Saudi Arabia and several neighbours keep Friday–Saturday, so a Thursday afternoon meeting lands differently across a border that has no time difference at all.
About NZDT
New Zealand Daylight Time (NZDT) is UTC+13. It is used in New Zealand from late September to early April.
New Zealand Daylight Time is UTC+13, one of the few offsets past twelve hours and therefore a full calendar day ahead of most of the Americas. New Zealand's summer is the northern hemisphere's winter, so NZDT applies over Christmas — the opposite of every northern daylight-saving abbreviation, and a common mistake in end-of-year scheduling.
Does this gap change with the seasons?
Neither GST nor NZDT shifts with the seasons, so this 9-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 GST in NZDT?
9:00 AM GST is 6:00 PM NZDT.
Is NZDT ahead of GST?
NZDT is 9 hours ahead of GST.
Which time zone does this use?
GST is UTC+4 and NZDT is UTC+13. 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.