IST to NPT Time Zone Converter — Time Difference Between Kolkata and Kathmandu
Drag the slider or click the time display to type a specific hour and instantly convert IST to NPT. The time difference between Kolkata and Kathmandu is 0:15 hours — Kathmandu (NPT) is ahead of Kolkata (IST) (UTC+5:30 vs UTC+5:45); for example, 9:00 AM IST = 9:15 AM NPT; to convert, add 0:15 hours. Use this IST to NPT time zone converter to check the live current time in both cities, browse the 24-hour IST to NPT conversion table, plan international meetings, find the best overlap hours, and account for daylight saving time changes automatically.
IST
India Standard Time
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NPT
Nepal Time
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IST to NPT Time Zone Difference — Hour-by-Hour Conversion Table
Scan each row to convert any IST time to NPT and find the exact time difference between Kolkata and Kathmandu hour by hour. Amber-highlighted rows mark standard daytime business hours, making it easy to spot overlapping work windows for scheduling international meetings or remote team calls. Tap the arrows to jump between days, click "Today" to reset, and all daylight saving time transitions are handled automatically.
| IST (Kolkata) | NPT (Kathmandu) |
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What Time Is It Now in Kolkata?
Live current local time in Kolkata, India — IST (UTC+5:30). Updates every second.
What Time Is It Now in Kathmandu?
Live current local time in Kathmandu, Nepal — NPT (UTC+5:45). Updates every second.
IST to NPT Quick Reference
Common business hours in Kolkata converted to Kathmandu local time — handy for scheduling video calls, client meetings, and international conference calls.
IST & NPT Meeting Planner — Best Overlapping Hours
Use the color-coded conversion table above to find overlapping business hours between Kolkata and Kathmandu. Amber rows mark standard daytime work hours (8 AM–6 PM local time) — pick a slot that falls in amber on both sides for a meeting time that works for everyone. Since IST (UTC+5:30) is 0:15 hours ahead of NPT (UTC+5:45), this time zone meeting planner is ideal for scheduling international calls, remote team standups, and cross-border project syncs.
Why Trust This Kolkata to Kathmandu Time Zone Converter?
ConvertFlash uses the IANA Time Zone Database — the same authoritative source that powers your phone, browser, and every major operating system — so every Kolkata to Kathmandu conversion handles daylight saving time transitions, half-hour UTC offsets, and historical time zone changes automatically. The live world clock updates every second, and the hour-by-hour conversion table regenerates correctly for any past or future date you select, making it reliable for both real-time checks and advance international scheduling.
IST — India Standard Time
Kolkata, India — UTC offset UTC+5:30
- Abbreviation
- IST
- UTC Offset
- UTC+5:30
- City
- Kolkata
- Country
- India
NPT — Nepal Time
Kathmandu, Nepal — UTC offset UTC+5:45
- Abbreviation
- NPT
- UTC Offset
- UTC+5:45
- City
- Kathmandu
- Country
- Nepal