Auckland to AST
-17hAuckland
NZDTSOURCEAST
ASTGreen rows indicate typical business hours (9 AM - 5 PM)
NZDT and AST on the World Map
The map below highlights the NZDT (New Zealand Standard Time) and AST (Atlantic Standard Time) timezone regions across the globe.
NZST – New Zealand Standard Time
UTC+12:00New Zealand Standard Time (NZST) is the time zone for New Zealand, 12 hours ahead of UTC.
- •New Zealand is among the first major countries to see a new day.
- •NZST is 17 hours ahead of EST.
- •New Zealand observes DST from September to April (Southern Hemisphere summer).
AST – Atlantic Standard Time
UTC-04:00Atlantic Standard Time (AST) is the time zone for the Canadian Atlantic provinces and the Caribbean, 4 hours behind UTC.
- •Puerto Rico uses AST year-round and does not observe DST.
- •AST is 1 hour ahead of EST.
- •Halifax, the capital of Nova Scotia, is the largest city in AST Canada.
About Auckland
WikipediaAuckland operates on New Zealand Standard Time (NZST), UTC+12. As the first major city to see each day, Auckland opens global business ahead of all other markets.
Auckland is the first major city to see the sunrise each day (along with cities further east).
Everything You Need to Know About Auckland and AST Time
Auckland runs on New Zealand Daylight Time (NZDT) at UTC+13:00, currently observing daylight saving time. AST runs on Atlantic Standard Time (AST) at UTC-04:00. That puts Auckland 17 hours behind AST — a difference of -17h at the current offsets.
In practice, when it is 9:00 AM in Auckland it is 4:00 PM in AST on the previous day. Midnight in Auckland is 7:00 AM in AST.Auckland observes daylight saving time while AST does not, so the gap narrows or widens by an hour part of the year.
Auckland to AST time conversion table
| Auckland (NZDT) | AST (AST) | Day |
|---|---|---|
| 12:00 AM | 7:00 AM | previous day |
| 6:00 AM | 1:00 PM | previous day |
| 7:00 AM | 2:00 PM | previous day |
| 8:00 AM | 3:00 PM | previous day |
| 9:00 AM | 4:00 PM | previous day |
| 12:00 PM | 7:00 PM | previous day |
| 3:00 PM | 10:00 PM | previous day |
| 5:00 PM | 12:00 AM | same day |
| 6:00 PM | 1:00 AM | same day |
| 9:00 PM | 4:00 AM | same day |
Why people convert Auckland to AST time
- Scheduling a call from Auckland to AST: a 10:00 AM start in Auckland lands at 5:00 PM in AST the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -17h gap: Auckland and AST 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 AST is 4:00 PM in Auckland.
- Coordinating a Auckland-based team with AST 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 NZDT" is unambiguous; "3 PM" across a -17h gap is not.
- With a -17h gap there is no shared 9-to-5 window, so alternate the early start: one week Auckland takes the early slot, the next week AST does.
- Auckland: Clocks fall back on Sat, Apr 3, 2027. Re-check this page after that date because the offset changes and so does the -17h gap.
About NZST (New Zealand Standard Time)
New Zealand Standard Time (NZST) is the standard time zone for New Zealand and its dependencies. New Zealand is among the first countries to see a new calendar day. During summer (September to April), clocks advance to New Zealand Daylight Time (NZDT, UTC+13:00).
About AST (Atlantic Standard Time)
Atlantic Standard Time (AST) covers Canada's Atlantic provinces (Nova Scotia, New Brunswick, Prince Edward Island, and most of Labrador), as well as several Caribbean nations. Puerto Rico and the US Virgin Islands use AST year-round without daylight saving time. The Canadian provinces switch to Atlantic Daylight Time (ADT) in summer.
Best time to call between Auckland and AST
With a -17h offset there is no overlap inside a normal 9 AM – 5 PM day. AST opens at 9:00 AM AST, which is 4:00 PM in Auckland, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Auckland and AST have no shared working hours because of the -17h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Auckland is 17 hours behind AST (NZDT UTC+13:00 → AST UTC-04:00). 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
Auckland
☀ Currently in DST
Standard: UTC+12:00 · DST: UTC+13:00
Clocks fall back on Sat, Apr 3, 2027
AST
☀ Currently in DST
Standard: UTC-04:00 · DST: UTC-03:00
Clocks fall back on Sun, Nov 1, 2026
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 Auckland and AST?
Auckland (NZDT, UTC+13:00) is 17 hours behind AST (AST, UTC-04:00). The gap is currently -17h.
How do I convert Auckland time to AST time?
Add -17h to Auckland local time. For example, 9:00 AM in Auckland is 4:00 PM in AST (previous day).
What time is it in AST right now?
AST uses AST at UTC-04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -17h offset from Auckland.
What is the best time to call AST from Auckland?
There is no shared working-hours window because of the -17h gap. The closest option is 1:00 PM in Auckland, which is 8:00 PM in AST.
Which is behind, Auckland or AST?
Auckland is 17 hours behind AST. When it is 12:00 PM in Auckland it is 7:00 PM in AST.
Do Auckland and AST use different time zones?
Auckland (New Zealand) uses NZDT at UTC+13:00, while AST uses AST at UTC-04:00. The IANA identifiers are Pacific/Auckland and America/Halifax.
Does daylight saving time affect the Auckland–AST difference?
Yes at the moment: Auckland is on daylight saving time and AST is not, so the -17h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Auckland's time zone?
NZDT also covers Auckland, Wellington, Christchurch, Hamilton, Dunedin.
Which countries use NZDT, Auckland's zone?
NZDT is used in New Zealand.
Is there a day difference between Auckland and AST?
Sometimes. The -17h gap is large enough that 8:00 PM or later in Auckland already falls on the in AST.
What is the time difference between Auckland and AST?
AST is -17h from Auckland.
What timezone is Auckland in?
Auckland operates on New Zealand Standard Time (NZST), UTC+12. As the first major city to see each day, Auckland opens global business ahead of all other markets.
What timezone is AST in?
AST operates on its local timezone.
What are the business hours in Auckland?
Standard business hours in Auckland are 9:00 AM - 5:00 PM NZST.
Which countries use NZST (New Zealand Standard Time)?
NZST is used in New Zealand.
Does NZST observe daylight saving time?
Yes, NZST switches to NZDT during summer months.
What are some interesting facts about NZST?
New Zealand is among the first major countries to see a new day. NZST is 17 hours ahead of EST.
Which cities are in the AST timezone?
Major cities in the AST timezone include Halifax, San Juan, Santo Domingo, Caracas, La Paz, Fredericton, Charlottetown.
What is the UTC offset for AST?
Atlantic Standard Time (AST) is at UTC-04:00. During daylight saving time, it shifts to ADT.
What should I know about the AST timezone?
Puerto Rico uses AST year-round and does not observe DST. AST is 1 hour ahead of EST.
When is it midnight in Auckland, what time is it in AST?
When it is 12:00 AM (midnight) in Auckland (NZST), it is -17h later in AST (AST).
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See every conversion from Auckland →·See every conversion from AST →