Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

Sri Lanka to NPT

+0h 15m

Sri Lanka

ISTSOURCE

UTC+05:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

NPT

UTC+05:45

HH12

MM15

12:15 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Sri Lanka

NPT

12:00 AM

12:15 AM

2:00 AM

2:15 AM

4:00 AM

4:15 AM

6:00 AM

6:15 AM

8:00 AM

8:15 AM

10:00 AM

10:15 AM

12:00 PM

12:15 PM

2:00 PM

2:15 PM

4:00 PM

4:15 PM

6:00 PM

6:15 PM

8:00 PM

8:15 PM

10:00 PM

10:15 PM

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

IST and NPT on the World Map

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

IST Zone

→

NPT Zone

Explore all world timezones interactively →

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

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

Time Conversion Guide: Sri Lanka to NPT

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

In practice, when it is 9:00 AM in Sri Lanka it is 9:15 AM in NPT. Midnight in Sri Lanka is 12:15 AM in NPT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Sri Lanka to NPT time conversion table

Sri Lanka (IST)	NPT (NPT)	Day
12:00 AM	12:15 AM	same day
6:00 AM	6:15 AM	same day
7:00 AM	7:15 AM	same day
8:00 AM	8:15 AM	same day
9:00 AM	9:15 AM	same day
12:00 PM	12:15 PM	same day
3:00 PM	3:15 PM	same day
5:00 PM	5:15 PM	same day
6:00 PM	6:15 PM	same day
9:00 PM	9:15 PM	same day

Why people convert Sri Lanka to NPT time

Scheduling a call from Sri Lanka to NPT: a 10:00 AM start in Sri Lanka lands at 10:15 AM in NPT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Sri Lanka and NPT are inside the 9-to-5 working day between 9:00 AM and 4:45 PM IST time (9:15 AM–5:00 PM NPT). That is roughly 7 hours 45 minutes of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in Sri Lanka is 8:15 PM in NPT makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM IST" is unambiguous; "3 PM" across a +0h 15m gap is not.
Block 9:00 AM–4:45 PM IST as the recurring meeting window if you work primarily from Sri Lanka and need NPT colleagues present.

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.

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).

Best time to call between Sri Lanka and NPT

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

Business hours overlap

Sri Lanka and NPT share 7 hours of working-hours overlap (9:00 AM–4:45 PM IST), so scheduling a live meeting is straightforward.

Sri Lanka is 15 minutes ahead of NPT (IST UTC+05:30 → NPT UTC+05:45). The shared working window is 9:00 AM–4:45 PM IST. Remember to re-check around daylight-saving transitions.

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Sri Lanka and NPT?

Sri Lanka (IST, UTC+05:30) is 15 minutes ahead of NPT (NPT, UTC+05:45). The gap is currently +0h 15m.

How do I convert Sri Lanka time to NPT time?

Add +0h 15m to Sri Lanka local time. For example, 9:00 AM in Sri Lanka is 9:15 AM in NPT.

What time is it in NPT right now?

NPT uses NPT at UTC+05:45. Use the live converter at the top of this page — it updates in real time and already accounts for the +0h 15m offset from Sri Lanka.