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).

Kathmandu to IST

-0h 15m

Kathmandu

NPTSOURCE

Nepal · UTC+05:45

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

IST

UTC+05:30

HH11

MM45

11:45 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Kathmandu

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.

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

About Kathmandu

Wikipedia

Kathmandu operates on Nepal Time (NPT), one of the world's unique UTC+5:45 timezones. This 15-minute offset from India makes Nepal time distinctive for global coordination.

Population:1.4 million

Metro:3.0 million

Business Hours:10:00 AM - 5:00 PM NPT

Currency:NPR (रू)

Stock Exchange:NEPSE (Nepal Stock Exchange)

Key Landmarks

Boudhanath StupaSwayambhunathDurbar SquarePashupatinath TempleGarden of Dreams

Did You Know?

Nepal Time (NPT) is one of only three timezones offset by 45 minutes (UTC+5:45).

Learn more about NPT timezone →

Comparing Time Zones: Kathmandu and IST

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

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

Kathmandu to IST time conversion table

Kathmandu (NPT)	IST (IST)	Day
12:00 AM	11:45 PM	previous 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
12:00 PM	11:45 AM	same day
3:00 PM	2:45 PM	same day
5:00 PM	4:45 PM	same day
6:00 PM	5:45 PM	same day
9:00 PM	8:45 PM	same day

Why people convert Kathmandu to IST time

Scheduling a call from Kathmandu to IST: a 10:00 AM start in Kathmandu lands at 9:45 AM in IST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Kathmandu 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.
Booking travel or deliveries: tracking IST local time against Kathmandu keeps pickup windows and arrival estimates honest across the -0h 15m offset.

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 Kathmandu 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 Kathmandu and IST

Both Kathmandu 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

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

Kathmandu 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.

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 Kathmandu and IST?

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

How do I convert Kathmandu time to IST time?

Add -0h 15m to Kathmandu local time. For example, 9:00 AM in Kathmandu 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 Kathmandu.

What is the best time to call IST from Kathmandu?

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, Kathmandu or IST?

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

Do Kathmandu and IST use different time zones?

Kathmandu (Nepal) uses NPT at UTC+05:45, while IST uses IST at UTC+05:30. The IANA identifiers are Asia/Kathmandu and Asia/Kolkata.

Does daylight saving time affect the Kathmandu–IST difference?

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

Which other cities share Kathmandu's time zone?

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

Which countries use NPT, Kathmandu's zone?

NPT is used in Nepal.

Is there a day difference between Kathmandu and IST?

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

What is the time difference between Kathmandu and IST?

IST is -0h 15m from Kathmandu.

What timezone is Kathmandu in?

Kathmandu operates on Nepal Time (NPT), one of the world's unique UTC+5:45 timezones. This 15-minute offset from India makes Nepal time distinctive for global coordination.