United States to NZST time conversion
NZST is 16 hours ahead of United States. After the next clock change (): NZST is 17 hours ahead of United States.
NZST is always UTC+12. Right now most places that use NZST are on NZDT (UTC+13): NZDT is 17 hours ahead of United States.
Time difference with your location
United States is 4 hours behind UTC. Compare with your local time →
Choose a date and time
Choose the local time in United States to convert it to NZST on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · United States → NZST
This table converts each hour in United States to NZST on 2026-10-21.
- Working hours
- Outside working hours
- Night hours
| United States | NZST | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 16:004:00 PM | |
| 01:001:00 AM | 17:005:00 PM | |
| 02:002:00 AM | 18:006:00 PM | |
| 03:003:00 AM | 19:007:00 PM | |
| 04:004:00 AM | 20:008:00 PM | |
| 05:005:00 AM | 21:009:00 PM | |
| 06:006:00 AM | 22:0010:00 PM | |
| 07:007:00 AM | 23:0011:00 PM | |
| 08:008:00 AM | 00:0012:00 AM +1 day | |
| 09:009:00 AM | 01:001:00 AM +1 day | |
| 10:0010:00 AM | 02:002:00 AM +1 day | |
| 11:0011:00 AM | 03:003:00 AM +1 day | |
| 12:0012:00 PM | 04:004:00 AM +1 day | |
| 13:001:00 PM | 05:005:00 AM +1 day | |
| 14:002:00 PM | 06:006:00 AM +1 day | |
| 15:003:00 PM | 07:007:00 AM +1 day | |
| 16:004:00 PM | 08:008:00 AM +1 day | ✓ |
| 17:005:00 PM | 09:009:00 AM +1 day | ✓ |
| 18:006:00 PM | 10:0010:00 AM +1 day | |
| 19:007:00 PM | 11:0011:00 AM +1 day | |
| 20:008:00 PM | 12:0012:00 PM +1 day | |
| 21:009:00 PM | 13:001:00 PM +1 day | |
| 22:0010:00 PM | 14:002:00 PM +1 day | |
| 23:0011:00 PM | 15:003:00 PM +1 day |
Quick conversion examples
These examples use United States (UTC-4) and NZST (UTC+12); choosing a date applies the local clock changes.
Conversion formula: NZST = United States + 16h · NZDT = United States + 18h · NZDT = United States + 17h.
| United States | NZST |
|---|---|
| 6:00 AM United States | = 10:00 PM NZST |
| 7:00 AM United States | = 11:00 PM NZST |
| 8:00 AM United States | = 12:00 AM NZST (+1 day) |
| 9:00 AM United States | = 1:00 AM NZST (+1 day) |
| 10:00 AM United States | = 2:00 AM NZST (+1 day) |
| 12:00 PM United States | = 4:00 AM NZST (+1 day) |
| 3:00 PM United States | = 7:00 AM NZST (+1 day) |
| 5:00 PM United States | = 9:00 AM NZST (+1 day) |
| 6:00 PM United States | = 10:00 AM NZST (+1 day) |
| 8:00 PM United States | = 12:00 PM NZST (+1 day) |
Overlapping meeting hours
The 08:00–18:00 working day in United States and NZST overlaps for 2 hours on 2026-10-21.
- Shared working hours
- 16:00–18:00 United States · 08:00–10:00 NZST
Clock changes on both sides, 2026–2028
United States and NZST have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | United States | NZST |
|---|---|---|
| 2026 | · 02:00 → 03:00 · 02:00 → 01:00 | · 03:00 → 02:00 · 02:00 → 03:00 |
| 2027 | · 02:00 → 03:00 · 02:00 → 01:00 | · 03:00 → 02:00 · 02:00 → 03:00 |
| 2028 | · 02:00 → 03:00 · 02:00 → 01:00 | · 03:00 → 02:00 · 02:00 → 03:00 |
At the start of 2026, NZDT is 18 hours ahead of United States. The difference changes during the following periods.
- From 2026-03-08 03:00 United States until 2026-04-04 10:00 United States, NZDT is 17 hours ahead of United States.
- From 2026-04-04 10:00 United States until 2026-09-26 10:00 United States, NZST is 16 hours ahead of United States.
- From 2026-09-26 10:00 United States until 2026-11-01 01:00 United States, NZDT is 17 hours ahead of United States.
- From 2027-03-14 03:00 United States until 2027-04-03 10:00 United States, NZDT is 17 hours ahead of United States.
- From 2027-04-03 10:00 United States until 2027-09-25 10:00 United States, NZST is 16 hours ahead of United States.
- From 2027-09-25 10:00 United States until 2027-11-07 01:00 United States, NZDT is 17 hours ahead of United States.
- From 2028-03-12 03:00 United States until 2028-04-01 10:00 United States, NZDT is 17 hours ahead of United States.
- From 2028-04-01 10:00 United States until 2028-09-23 10:00 United States, NZST is 16 hours ahead of United States.
- From 2028-09-23 10:00 United States until 2028-11-05 01:00 United States, NZDT is 17 hours ahead of United States.
Frequently asked questions
What time is 9 AM United States in NZST?
9:00 AM United States = 1:00 AM NZST (+1 day), using UTC-4 and UTC+12. Choose a date above for the seasonal local time.
Does the time difference between United States and NZST change during the year?
Yes. During 2026–2028: NZST is 16 hours ahead of United States; NZST is 17 hours ahead of United States; NZST is 18 hours ahead of United States. The clock-change table gives the dates for both sides.
How do I tell whether it is day or night in NZST?
Read the GILT clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.
What is the best time to call between United States and NZST?
The shared 08:00–18:00 working window is 16:00–18:00 United States / 08:00–10:00 GILT, a total of 2 hours.
What is the time difference between United States and NZST now?
Right now, GILT is 16 hours ahead of United States. Conversion formula: NZST = United States + 16h · NZDT = United States + 18h · NZDT = United States + 17h.