Offset
The time difference between Kolkata and Auckland is 6.5 hours.
Kolkata (IST) is behind Auckland (NZST).
IST: UTC+5:30
NZST: UTC+12
Neither Kolkata nor Auckland is currently observing daylight saving time.
When to schedule
Business-hours overlap: 9 AM–11 AM in Kolkata (3 PM–5 PM in Auckland).
Both teams are in working hours during this window on weekdays.
Suggested time: 10:00 AM Kolkata (4:30 PM Auckland).
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
New Zealand
- New Year's DayThu, Jan 1
- Day after New Year's DayFri, Jan 2
- Waitangi DayFri, Feb 6
- Good FridayFri, Apr 3
- Easter MondayMon, Apr 6
- Anzac DayMon, Apr 27
- King's BirthdayMon, Jun 1
- MatarikiFri, Jul 10
- Labour DayMon, Oct 26
- Christmas DayFri, Dec 25
- Boxing DayMon, Dec 28
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Kolkata | Auckland | Day |
|---|---|---|
| 12:00 am | 6:30 am | Same day |
| 1:00 am | 7:30 am | Same day |
| 2:00 am | 8:30 am | Same day |
| 3:00 am | 9:30 am | Same day |
| 4:00 am | 10:30 am | Same day |
| 5:00 am | 11:30 am | Same day |
| 6:00 am | 12:30 pm | Same day |
| 7:00 am | 1:30 pm | Same day |
| 8:00 am | 2:30 pm | Same day |
| 9:00 am | 3:30 pm | Same day |
| 10:00 am | 4:30 pm | Same day |
| 11:00 am | 5:30 pm | Same day |
| 12:00 pm | 6:30 pm | Same day |
| 1:00 pm | 7:30 pm | Same day |
| 2:00 pm | 8:30 pm | Same day |
| 3:00 pm | 9:30 pm | Same day |
| 4:00 pm | 10:30 pm | Same day |
| 5:00 pm | 11:30 pm | Same day |
| 6:00 pm | 12:30 am | +1 day |
| 7:00 pm | 1:30 am | +1 day |
| 8:00 pm | 2:30 am | +1 day |
| 9:00 pm | 3:30 am | +1 day |
| 10:00 pm | 4:30 am | +1 day |
| 11:00 pm | 5:30 am | +1 day |
Daylight saving time
Auckland observes daylight saving time; Kolkata does not. The offset between the two zones changes when Auckland transitions: on Sunday, September 27, 2026, clocks spring forward from NZST to NZDT.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 4:52 AM
- Sunset
- 6:21 PM
- Day length
- 13h 28m
- Sunrise
- 7:29 AM
- Sunset
- 5:12 PM
- Day length
- 9h 43m
Daylight overlap: 5h 50m — 4:52 AM–10:42 AM in Kolkata (11:22 AM–5:12 PM in Auckland). Both locations are in daylight during this window.
Cities in these zones
Other cities in India Standard Time
Other cities in New Zealand Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in India Standard Time
- BOM
- NMI
- DEL
- BLR
- HYD
- AMD
- MAA
- CCU
- STV
- PNQ
Airports in New Zealand Time
- AKL
- CHC
- WLG
Related conversions
Common conversions
- What is 9:00 am Kolkata in Auckland?
- 9:00 am Kolkata is 3:30 pm Auckland.
- What is 12:00 pm Kolkata in Auckland?
- 12:00 pm Kolkata is 6:30 pm Auckland.
- What is 12:30 pm Kolkata in Auckland?
- 12:30 pm Kolkata is 7:00 pm Auckland.
- What is 2:00 pm Kolkata in Auckland?
- 2:00 pm Kolkata is 8:30 pm Auckland.
- What is 5:00 pm Kolkata in Auckland?
- 5:00 pm Kolkata is 11:30 pm Auckland.
- What is 11:30 pm Kolkata in Auckland?
- 11:30 pm Kolkata is 6:00 am Auckland, the next day.