GST to NZDT
+9hGST
GSTSOURCENZDT
NZDTGreen rows indicate typical business hours (9 AM - 5 PM)
GST and NZDT on the World Map
The map below highlights the GST (Gulf Standard Time) and NZDT (New Zealand Daylight Time) timezone regions across the globe.
GST – Gulf Standard Time
UTC+04:00Gulf Standard Time (GST) is used in the UAE, Oman, and other Gulf states, 4 hours ahead of UTC.
- •Dubai uses GST year-round with no daylight saving time.
- •GST is 9 hours ahead of EST and 4 hours ahead of GMT.
- •The Dubai Financial Market (DFM) operates on GST.
NZDT – New Zealand Daylight Time
UTC+13:00New Zealand Daylight Time (NZDT, UTC+13:00) is New Zealand's summer time zone, one of the earliest offsets in the world.
- •NZDT runs from the last Sunday in September to the first Sunday in April.
- •NZDT is UTC+13:00 — one of the earliest time offsets used anywhere.
- •New Zealand changes its clocks two to three weeks before Australia.
- •The Chatham Islands observe UTC+13:45 during their summer time.
Understanding the +9h Gap: GST vs NZDT
GST runs on Gulf Standard Time (GST) at UTC+04:00. NZDT runs on New Zealand Daylight Time (NZDT) at UTC+13:00. That puts GST 9 hours ahead of NZDT — a difference of +9h at the current offsets.
In practice, when it is 9:00 AM in GST it is 6:00 PM in NZDT. Midnight in GST is 9:00 AM in NZDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
GST to NZDT time conversion table
| GST (GST) | NZDT (NZDT) | Day |
|---|---|---|
| 12:00 AM | 9:00 AM | same day |
| 6:00 AM | 3:00 PM | same day |
| 7:00 AM | 4:00 PM | same day |
| 8:00 AM | 5:00 PM | same day |
| 9:00 AM | 6:00 PM | same day |
| 12:00 PM | 9:00 PM | same day |
| 3:00 PM | 12:00 AM | next day |
| 5:00 PM | 2:00 AM | next day |
| 6:00 PM | 3:00 AM | next day |
| 9:00 PM | 6:00 AM | next day |
Why people convert GST to NZDT time
- Scheduling a call from GST to NZDT: a 10:00 AM start in GST lands at 7:00 PM in NZDT, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +9h gap: GST and NZDT have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in NZDT is 6:00 PM in GST.
- Coordinating a GST-based team with NZDT contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM GST" is unambiguous; "3 PM" across a +9h gap is not.
- With a +9h gap there is no shared 9-to-5 window, so alternate the early start: one week GST takes the early slot, the next week NZDT does.
About GST (Gulf Standard Time)
Gulf Standard Time (GST) is the time zone used in the United Arab Emirates, Oman, and other Gulf states. GST does not observe daylight saving time. Dubai and Abu Dhabi, major international business and tourism hubs, operate on GST.
About NZDT (New Zealand Daylight Time)
New Zealand Daylight Time (NZDT) is the summer time zone for New Zealand, one hour ahead of New Zealand Standard Time (NZST, UTC+12:00). It runs from the last Sunday in September to the first Sunday in April, so New Zealand shifts a week or two earlier in spring than Australia. At UTC+13:00, NZDT is among the earliest offsets in the world — only Samoa, Tonga and parts of Kiribati run further ahead at certain times of year. Auckland and Wellington are 13 hours ahead of UTC during NZDT, 12 hours ahead of Sydney, and 18 hours ahead of New York. The Chatham Islands, 45 minutes further east, move to UTC+13:45.
Best time to call between GST and NZDT
With a +9h offset there is no overlap inside a normal 9 AM – 5 PM day. NZDT opens at 9:00 AM NZDT, which is 6:00 PM in GST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
GST and NZDT have no shared working hours because of the +9h gap. Teams need to alternate early starts or rely on asynchronous handovers.
GST is 9 hours ahead of NZDT (GST UTC+04:00 → NZDT UTC+13:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
GST
Does not observe DST
NZDT
☀ Currently in DST
Standard: UTC+12:00 · DST: UTC+13:00
Clocks fall back on Sat, Apr 3, 2027
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between GST and NZDT?
GST (GST, UTC+04:00) is 9 hours ahead of NZDT (NZDT, UTC+13:00). The gap is currently +9h.
How do I convert GST time to NZDT time?
Add +9h to GST local time. For example, 9:00 AM in GST is 6:00 PM in NZDT.
What time is it in NZDT right now?
NZDT uses NZDT at UTC+13:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +9h offset from GST.
What is the best time to call NZDT from GST?
There is no shared working-hours window because of the +9h gap. The closest option is 1:00 PM in GST, which is 10:00 PM in NZDT.
Which is ahead, GST or NZDT?
GST is 9 hours ahead of NZDT. When it is 12:00 PM in GST it is 9:00 PM in NZDT.
Does daylight saving time affect the GST–NZDT difference?
Neither zone observes daylight saving time, so the +9h offset between GST and NZDT is fixed all year.
Which other cities share GST's time zone?
GST also covers Dubai, Abu Dhabi, Muscat, Baku, Tbilisi.
Which countries use GST, GST's zone?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Is there a day difference between GST and NZDT?
Not normally. The +9h gap only pushes the date over for late-evening times.
What is the time difference between GST and NZDT?
NZDT is +9h from GST.
What timezone is GST in?
GST operates on its local timezone.
What timezone is NZDT in?
NZDT operates on its local timezone.
Which countries use GST (Gulf Standard Time)?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Does GST observe daylight saving time?
No, GST does not observe daylight saving time and remains at UTC+04:00 year-round.
What are some interesting facts about GST?
Dubai uses GST year-round with no daylight saving time. GST is 9 hours ahead of EST and 4 hours ahead of GMT.
Which cities are in the NZDT timezone?
Major cities in the NZDT timezone include Auckland, Wellington, Christchurch, Hamilton, Dunedin.
What is the UTC offset for NZDT?
New Zealand Daylight Time (NZDT) is at UTC+13:00. During daylight saving time, it shifts to NZDT.
What should I know about the NZDT timezone?
NZDT runs from the last Sunday in September to the first Sunday in April. NZDT is UTC+13:00 — one of the earliest time offsets used anywhere.
When is it midnight in GST, what time is it in NZDT?
When it is 12:00 AM (midnight) in GST (GST), it is +9h later in NZDT (NZDT).
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