NZDT to IST Time Converter
IST is 7 hours and 30 minutes behind NZDT. NZDT is UTC+13:00, and IST is UTC+5:30.
Best Time to Call Between NZDT and IST
Standard 9-to-5 hours in these two zones never overlap, so someone has to take the call outside their working day. The most workable window is 3:00 PM to 10:00 PM NZDT, which is 7:30 AM to 2:30 PM IST.
both at work NZDT only IST only neither — hours along the strip are NZDT.
Common Times Converted
NZDT on the left, IST on the right.
NZDT to IST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| NZDT | IST | Working hours |
|---|---|---|
| 12:00 AM | 4:30 PM prev day | IST only |
| 1:00 AM | 5:30 PM prev day | — |
| 2:00 AM | 6:30 PM prev day | — |
| 3:00 AM | 7:30 PM prev day | — |
| 4:00 AM | 8:30 PM prev day | — |
| 5:00 AM | 9:30 PM prev day | — |
| 6:00 AM | 10:30 PM prev day | — |
| 7:00 AM | 11:30 PM prev day | — |
| 8:00 AM | 12:30 AM | — |
| 9:00 AM | 1:30 AM | NZDT only |
| 10:00 AM | 2:30 AM | NZDT only |
| 11:00 AM | 3:30 AM | NZDT only |
| 12:00 PM | 4:30 AM | NZDT only |
| 1:00 PM | 5:30 AM | NZDT only |
| 2:00 PM | 6:30 AM | NZDT only |
| 3:00 PM | 7:30 AM | NZDT only |
| 4:00 PM | 8:30 AM | NZDT only |
| 5:00 PM | 9:30 AM | IST only |
| 6:00 PM | 10:30 AM | IST only |
| 7:00 PM | 11:30 AM | IST only |
| 8:00 PM | 12:30 PM | IST only |
| 9:00 PM | 1:30 PM | IST only |
| 10:00 PM | 2:30 PM | IST only |
| 11:00 PM | 3:30 PM | IST only |
What NZDT and IST Actually Are
NZDT — New Zealand Daylight Time
Auckland, Wellington, Christchurch in the southern summer. Standing at UTC+13:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, April 4, 2027, to NZST.
New Zealand daylight time runs late September to early April, and the Chatham Islands keep their own clock 45 minutes ahead of the mainland throughout.
IST — India Standard Time
Mumbai, Delhi, Bengaluru, Chennai, Kolkata, Hyderabad — and Colombo. Standing at UTC+5:30 as written, and the region does not change its clocks, so that offset holds all year. IST also stands for Irish Standard Time (UTC+1) and Israel Standard Time (UTC+2). This page covers the Indian one, which is by far the most searched.
India runs a single time zone across a country wide enough for two, which is why sunrise in the north-east can come nearly two hours before Mumbai's. Proposals for a second zone resurface regularly and have never been adopted.
What This Means in Practice
Expect times on the half hour
IST sits on a 30-minute offset rather than a whole hour, so a round number on one side is never a round number on the other. A 9:00 meeting becomes 30 minutes past the hour, which is exactly the detail calendar invitations get wrong when someone converts in their head.
This gap is not fixed
NZDT changes its clocks and IST does not, so the difference between them moves by an hour twice a year. A recurring meeting set now will drift for one side from Sunday, April 4, 2027 unless someone resets it.
Major Cities in Each Zone
Cities on NZDT
Cities on IST
Frequently Asked Questions
What is the time difference between NZDT and IST?
IST is 7 hours and 30 minutes behind NZDT.
What is 9:00 AM NZDT in IST?
9:00 AM NZDT is 1:30 AM IST.
What are the best hours to schedule a call between NZDT and IST?
Standard business hours in these two zones do not overlap at all, so one side has to work outside the 9-to-5. The most workable window is 3:00 PM to 10:00 PM NZDT, which is 7:30 AM to 2:30 PM IST.
Does the difference between NZDT and IST change during the year?
Yes. NZDT observes daylight saving and IST does not, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, April 4, 2027.
Does IST always mean India Standard Time?
IST also stands for Irish Standard Time (UTC+1) and Israel Standard Time (UTC+2). This page covers the Indian one, which is by far the most searched.