Zone & HourNPT to IST Time Converter
IST is 15 minutes behind of NPT.
NPT: Nepal Time, UTC+05:45.
IST: India Standard Time, UTC+05:30.
For a city that changes clocks, use the date-aware city converter.
Check the abbreviation before converting
IST can also mean Irish Standard Time (UTC+01:00) or Israel Standard Time (UTC+02:00). This page always uses India.
Convert a time
9:00 AM NPT = 8:45 AM IST (same day)
24-hour NPT to IST conversion table
These are fixed-offset examples. They apply whenever the two abbreviations have the exact meanings stated above.
| NPT · UTC+05:45 | IST · UTC+05:30 | Day |
|---|---|---|
| 12:00 AM | 11:45 PM | Previous day |
| 1:00 AM | 12:45 AM | Same day |
| 2:00 AM | 1:45 AM | Same day |
| 3:00 AM | 2:45 AM | Same day |
| 4:00 AM | 3:45 AM | Same day |
| 5:00 AM | 4:45 AM | Same day |
| 6:00 AM | 5:45 AM | Same day |
| 7:00 AM | 6:45 AM | Same day |
| 8:00 AM | 7:45 AM | Same day |
| 9:00 AM | 8:45 AM | Same day |
| 10:00 AM | 9:45 AM | Same day |
| 11:00 AM | 10:45 AM | Same day |
| 12:00 PM | 11:45 AM | Same day |
| 1:00 PM | 12:45 PM | Same day |
| 2:00 PM | 1:45 PM | Same day |
| 3:00 PM | 2:45 PM | Same day |
| 4:00 PM | 3:45 PM | Same day |
| 5:00 PM | 4:45 PM | Same day |
| 6:00 PM | 5:45 PM | Same day |
| 7:00 PM | 6:45 PM | Same day |
| 8:00 PM | 7:45 PM | Same day |
| 9:00 PM | 8:45 PM | Same day |
| 10:00 PM | 9:45 PM | Same day |
| 11:00 PM | 10:45 PM | Same day |
What NPT and IST mean
NPT: Nepal Time
Nepal uses UTC+05:45. The 45-minute component matters when comparing it with whole-hour zones. A representative location is Kathmandu, whose IANA identifier is Asia/Kathmandu.
IST: India Standard Time
IST here means India Standard Time, UTC+05:30. India does not currently change clocks seasonally. A representative location is Kolkata / Mumbai, whose IANA identifier is Asia/Kolkata.
Common conversion examples
- 6:00 AM NPT becomes 5:45 AM IST.
- 9:00 AM NPT becomes 8:45 AM IST.
- 12:00 PM NPT becomes 11:45 AM IST.
- 6:00 PM NPT becomes 5:45 PM IST.
- 9:00 PM NPT becomes 8:45 PM IST.
Frequently asked questions
Does this table change for daylight saving?
No. The offsets attached to these abbreviations stay fixed. A city may switch to a differently named abbreviation. NPT is not a daylight-saving designation in the interpretation used here.
Should I put an abbreviation in a meeting invitation?
Use an IANA city time zone and a full date. Abbreviations are useful shorthand when everyone agrees on the meaning, but they do not carry the complete rules that a calendar needs for recurring events.
Why can the day change?
The difference is 15 minutes. Adding or subtracting that amount can move the destination time before midnight or beyond the end of the source day. The last column makes that change explicit.