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DateAlmanac

What is NZST in AST?

Atlantic Time is 17 hours behind

New Zealand Time is on UTC+13:00 and Atlantic Time is on UTC−4:00 right now. New Zealand Time is on daylight saving, so its clocks read NZDT. The gap changes during the year — see below.

Convert a time

AST — Atlantic Time

6:00 am

AST, Fri

Time in Auckland
11:01:04 PM
Time in Halifax
6:01:04 AM
Difference
−17 h
Next clock change
March 14, 2027

When the difference changes

New Zealand Time and Atlantic Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:

  1. Now – March 14, 2027Atlantic Time is 17 hours behind
  2. March 14, 2027 – April 4, 2027Atlantic Time is 16 hours behind
  3. April 4, 2027 – September 26, 2027Atlantic Time is 15 hours behind
  4. September 26, 2027 – November 7, 2027Atlantic Time is 16 hours behind
  5. November 7, 2027 – onwardsAtlantic Time is 17 hours behind

Periods shorter than a day are not listed. Each zone changes at its own local time, so on a date when both move there are a few hours when the gap is briefly something else.

Daylight saving

New Zealand Time

Sunday, April 4, 2027

Clocks go back one hour — 3:00 am becomes 2:00 am local time, and the zone is on NZST after that.

Atlantic Time

Sunday, March 14, 2027

Clocks go forward one hour — 2:00 am becomes 3:00 am local time, and the zone is on ADT after that.

NZST to AST conversion table

Every hour of Friday, November 13, 2026, converted from New Zealand Time to Atlantic Time. 17 of the 24 hours fall on a different calendar day in Halifax, which is marked.

12:00 am NZDT
7:00 am AST−1 day
1:00 am NZDT
8:00 am AST−1 day
2:00 am NZDT
9:00 am AST−1 day
3:00 am NZDT
10:00 am AST−1 day
4:00 am NZDT
11:00 am AST−1 day
5:00 am NZDT
12:00 pm AST−1 day
6:00 am NZDT
1:00 pm AST−1 day
7:00 am NZDT
2:00 pm AST−1 day
8:00 am NZDT
3:00 pm AST−1 day
9:00 am NZDT
4:00 pm AST−1 day
10:00 am NZDT
5:00 pm AST−1 day
11:00 am NZDT
6:00 pm AST−1 day
12:00 pm NZDT
7:00 pm AST−1 day
1:00 pm NZDT
8:00 pm AST−1 day
2:00 pm NZDT
9:00 pm AST−1 day
3:00 pm NZDT
10:00 pm AST−1 day
4:00 pm NZDT
11:00 pm AST−1 day
5:00 pm NZDT
12:00 am AST
6:00 pm NZDT
1:00 am AST
7:00 pm NZDT
2:00 am AST
8:00 pm NZDT
3:00 am AST
9:00 pm NZDT
4:00 am AST
10:00 pm NZDT
5:00 am AST
11:00 pm NZDT
6:00 am AST

Scheduling between the two

Working hours overlap from 9:00 am to 11:00 am NZDT, which is 4:00 pm to 6:00 pm AST. Anything inside that window falls in the normal working day at both ends.

A note on AST: it can also mean Arabia Standard Time (UTC+3). This page means Atlantic Time.

Atlantic Time (AST) is used in Nova Scotia, New Brunswick and Puerto Rico

Other conversions