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GST to NZST: convert Gulf Standard Time to New Zealand Time

In January, NZST is 9 hours ahead of GST. In July it is 8 hours ahead of. The gap moves because the two regions handle daylight saving differently.

GST also abbreviates South Georgia Time (UTC-2). These pages use the Gulf meaning.

One instant, two local clocks

Drag one day across both zones

Shared instant12:00 UTC
Difference nowNZST is 9 hours ahead
GSTGulf Standard Time
16:00Thu, Jan 15
NZSTNew Zealand Time
01:00Fri, Jan 16
Approximate daylight 09:00 to 17:00 Selected local time

Both lanes show the same instant. Local dates, daylight, and offsets come from each IANA zone on the selected date, so daylight saving changes are included.

Right now

GST: Gulf Standard Time

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NZST: New Zealand Time

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Local times come from your browser's IANA time zone data.

GST to NZST hour by hour

Two columns because the gap changes with daylight saving: use the January column roughly November to mid-March, the July column mid-March to October. Exact switch dates vary by year.

GSTNZST (January)NZST (July)
12:00 AM9:00 AM8:00 AM
1:00 AM10:00 AM9:00 AM
2:00 AM11:00 AM10:00 AM
3:00 AM12:00 PM11:00 AM
4:00 AM1:00 PM12:00 PM
5:00 AM2:00 PM1:00 PM
6:00 AM3:00 PM2:00 PM
7:00 AM4:00 PM3:00 PM
8:00 AM5:00 PM4:00 PM
9:00 AM6:00 PM5:00 PM
10:00 AM7:00 PM6:00 PM
11:00 AM8:00 PM7:00 PM
12:00 PM9:00 PM8:00 PM
1:00 PM10:00 PM9:00 PM
2:00 PM11:00 PM10:00 PM
3:00 PM12:00 AM (next day)11:00 PM
4:00 PM1:00 AM (next day)12:00 AM (next day)
5:00 PM2:00 AM (next day)1:00 AM (next day)
6:00 PM3:00 AM (next day)2:00 AM (next day)
7:00 PM4:00 AM (next day)3:00 AM (next day)
8:00 PM5:00 AM (next day)4:00 AM (next day)
9:00 PM6:00 AM (next day)5:00 AM (next day)
10:00 PM7:00 AM (next day)6:00 AM (next day)
11:00 PM8:00 AM (next day)7:00 AM (next day)

Scheduling a call between GST and NZST

Standard business hours (9:00 AM to 5:00 PM) do not overlap in January: daytime in Gulf Standard Time falls outside the working day in New Zealand Time, so one side needs an early morning or late evening.

In July standard business hours do not overlap at all.

NZST to GST (reverse)Open the full converter

More GST conversions

Offsets are computed from the IANA time zone database for January 15 and July 15 of the current year. GST here means Gulf Standard Time (United Arab Emirates and Oman); NZST means New Zealand Time (New Zealand).