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NPT to IST

-0h 15m

NPT

NPTSOURCE
UTC+05:45
HH12
:
MM00
  
12:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM

IST

IST
UTC+05:30
HH11
:
MM45
  
11:45 (24-hr)
12 AM6 AM12 PM6 PM12 AM
NPT
IST
12:00 AM
11:45 PM-1
2:00 AM
1:45 AM
4:00 AM
3:45 AM
6:00 AM
5:45 AM
8:00 AM
7:45 AM
10:00 AM
9:45 AM
12:00 PM
11:45 AM
2:00 PM
1:45 PM
4:00 PM
3:45 PM
6:00 PM
5:45 PM
8:00 PM
7:45 PM
10:00 PM
9:45 PM

Green rows indicate typical business hours (9 AM - 5 PM)

NPT and IST on the World Map

The map below highlights the NPT (Nepal Time) and IST (India Standard Time) timezone regions across the globe.

NPTISTKathmanduPokharaLalitpurBharatpurMumbaiDelhiBangaloreKolkata
NPT Zone
→
IST Zone

Explore all world timezones interactively →

NPT – Nepal Time

UTC+05:45

Nepal Time (NPT, UTC+05:45) is the time zone for Nepal — one of the few offsets in the world set on a 45-minute increment.

Countries in NPT
Nepal
Major Cities in NPT
KathmanduPokharaLalitpurBharatpurBiratnagar
Key Facts about NPT
  • •Nepal Time is UTC+05:45 — a 45-minute offset, not a whole or half hour.
  • •The 45-minute offset was adopted in 1986 to match Kathmandu's solar time.
  • •Nepal does not observe daylight saving time.
  • •Nepal is 15 minutes ahead of India, despite sharing a long open border.
Daylight Saving:No – UTC+05:45 year-round
Learn more about NPT on Wikipedia

IST – India Standard Time

UTC+05:30

India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.

Countries in IST
IndiaSri Lanka
Major Cities in IST
MumbaiDelhiBangaloreKolkataChennaiHyderabadPuneAhmedabadColomboJaipurLucknowSurat
Key Facts about IST
  • •India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
  • •India uses a single time zone despite spanning 30° of longitude.
  • •IST is one of only a handful of time zones with a 30-minute offset.
  • •IST is the most populous single time zone in the world with over 1.4 billion people.
  • •The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.
Daylight Saving:No – UTC+05:30 year-round
Learn more about IST on Wikipedia

Understanding the -0h 15m Gap: NPT vs IST

NPT runs on Nepal Time (NPT) at UTC+05:45. IST runs on India Standard Time (IST) at UTC+05:30. That puts NPT 15 minutes behind IST — a difference of -0h 15m at the current offsets.

In practice, when it is 9:00 AM in NPT it is 8:45 AM in IST. Midnight in NPT is 11:45 PM in IST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

NPT to IST time conversion table

NPT (NPT)IST (IST)Day
12:00 AM11:45 PMprevious day
6:00 AM5:45 AMsame day
7:00 AM6:45 AMsame day
8:00 AM7:45 AMsame day
9:00 AM8:45 AMsame day
12:00 PM11:45 AMsame day
3:00 PM2:45 PMsame day
5:00 PM4:45 PMsame day
6:00 PM5:45 PMsame day
9:00 PM8:45 PMsame day

Why people convert NPT to IST time

  • Scheduling a call from NPT to IST: a 10:00 AM start in NPT lands at 9:45 AM in IST, so you can confirm the slot without doing the arithmetic yourself.
  • Finding shared working hours: both NPT and IST are inside the 9-to-5 working day between 9:15 AM and 5:00 PM NPT time (9:00 AM–4:45 PM IST). That is roughly 7 hours 45 minutes of usable overlap.
  • Coordinating a NPT-based team with IST contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
  • Always state the zone abbreviation, not just the hour. "3:00 PM NPT" is unambiguous; "3 PM" across a -0h 15m gap is not.
  • Block 9:15 AM–5:00 PM NPT as the recurring meeting window if you work primarily from NPT and need IST colleagues present.

About NPT (Nepal Time)

Nepal Time (NPT) runs at UTC+05:45, one of only a handful of time zones worldwide that are not a whole or half hour from UTC. Nepal set its offset to 5 hours 45 minutes ahead of UTC in 1986 to mark the country's position between the 75°E and 90°E meridians; Kathmandu's solar time sits just over 5 hours 41 minutes ahead of Greenwich, so the 45-minute offset tracks the sun more closely than either 5:30 or 6:00 would. Nepal does not observe daylight saving time, so NPT is fixed all year. The offset makes Nepal 15 minutes ahead of India Standard Time (UTC+05:30) and 2 hours 15 minutes ahead of Dubai (UTC+04:00).

About IST (India Standard Time)

India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.

Best time to call between NPT and IST

Both NPT and IST sit inside the 9 AM – 5 PM working day between 9:15 AM–5:00 PM NPT, which is 9:00 AM–4:45 PM IST. That gives roughly 7 hours and 45 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

NPT and IST share 7 hours of working-hours overlap (9:15 AM–5:00 PM NPT), so scheduling a live meeting is straightforward.

NPT is 15 minutes behind IST (NPT UTC+05:45 → IST UTC+05:30). The shared working window is 9:15 AM–5:00 PM NPT. Remember to re-check around daylight-saving transitions.

Frequently Asked Questions

What is the time difference between NPT and IST?

NPT (NPT, UTC+05:45) is 15 minutes behind IST (IST, UTC+05:30). The gap is currently -0h 15m.

How do I convert NPT time to IST time?

Add -0h 15m to NPT local time. For example, 9:00 AM in NPT is 8:45 AM in IST.

What time is it in IST right now?

IST uses IST at UTC+05:30. Use the live converter at the top of this page — it updates in real time and already accounts for the -0h 15m offset from NPT.

What is the best time to call IST from NPT?

Call between 9:15 AM and 5:00 PM NPT — that maps to 9:00 AM–4:45 PM IST and keeps both parties inside the working day.

Which is behind, NPT or IST?

NPT is 15 minutes behind IST. When it is 12:00 PM in NPT it is 11:45 AM in IST.

Does daylight saving time affect the NPT–IST difference?

Neither zone observes daylight saving time, so the -0h 15m offset between NPT and IST is fixed all year.

Which other cities share NPT's time zone?

NPT also covers Kathmandu, Pokhara, Lalitpur, Bharatpur, Biratnagar.

Which countries use NPT, NPT's zone?

NPT is used in Nepal.

Is there a day difference between NPT and IST?

Not normally. The -0h 15m gap only pushes the date over the previous day.

What is the time difference between NPT and IST?

IST is -0h 15m from NPT.

What timezone is NPT in?

NPT operates on its local timezone.

What timezone is IST in?

IST operates on its local timezone.

Which countries use NPT (Nepal Time)?

NPT is used in Nepal.

Does NPT observe daylight saving time?

No, NPT does not observe daylight saving time and remains at UTC+05:45 year-round.

What are some interesting facts about NPT?

Nepal Time is UTC+05:45 — a 45-minute offset, not a whole or half hour. The 45-minute offset was adopted in 1986 to match Kathmandu's solar time.

Which cities are in the IST timezone?

Major cities in the IST timezone include Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad.

What is the UTC offset for IST?

India Standard Time (IST) is at UTC+05:30.

What should I know about the IST timezone?

India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT. India uses a single time zone despite spanning 30° of longitude.

When is it midnight in NPT, what time is it in IST?

When it is 12:00 AM (midnight) in NPT (NPT), it is -0h 15m later in IST (IST).