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 BST

-4h 45m

Kathmandu

NPTSOURCE

Nepal · UTC+05:45

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

BST

UTC+01:00☀ DST active

HH07

MM15

07:15 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Kathmandu

BST

12:00 AM

7:15 PM-1

2:00 AM

9:15 PM-1

4:00 AM

11:15 PM-1

6:00 AM

1:15 AM

8:00 AM

3:15 AM

10:00 AM

5:15 AM

12:00 PM

7:15 AM

2:00 PM

9:15 AM

4:00 PM

11:15 AM

6:00 PM

1:15 PM

8:00 PM

3:15 PM

10:00 PM

5:15 PM

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

NPT and BST on the World Map

The map below highlights the NPT (Nepal Time) and BST (British Summer Time) timezone regions across the globe.

NPT Zone

→

BST 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

BST – British Summer Time

UTC+01:00

British Summer Time (BST, UTC+01:00) is the daylight saving period in the United Kingdom, running from late March to late October.

Countries in BST

United Kingdom

Major Cities in BST

LondonBirminghamManchesterGlasgowEdinburghCardiffBelfastLiverpoolBristolLeeds

Key Facts about BST

•BST runs from the last Sunday in March to the last Sunday in October.
•BST is exactly one hour ahead of GMT, the UK's standard time.
•During BST, London is 4 hours ahead of New York while the US is on Eastern Daylight Time.
•The Isle of Man and the Channel Islands also observe BST.

Daylight Saving:Yes – switches to BST

Learn more about BST 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 →

Kathmandu vs BST: Offsets, DST and Best Call Times

Kathmandu runs on Nepal Time (NPT) at UTC+05:45. BST runs on British Summer Time (BST) at UTC+01:00. That puts Kathmandu 4 hours 45 minutes behind BST — a difference of -4h 45m at the current offsets.

In practice, when it is 9:00 AM in Kathmandu it is 4:15 AM in BST. Midnight in Kathmandu is 7:15 PM in BST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Kathmandu to BST time conversion table

Kathmandu (NPT)	BST (BST)	Day
12:00 AM	7:15 PM	previous day
6:00 AM	1:15 AM	same day
7:00 AM	2:15 AM	same day
8:00 AM	3:15 AM	same day
9:00 AM	4:15 AM	same day
12:00 PM	7:15 AM	same day
3:00 PM	10:15 AM	same day
5:00 PM	12:15 PM	same day
6:00 PM	1:15 PM	same day
9:00 PM	4:15 PM	same day

Why people convert Kathmandu to BST time

Scheduling a call from Kathmandu to BST: a 10:00 AM start in Kathmandu lands at 5:15 AM in BST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Kathmandu and BST are inside the 9-to-5 working day between 1:45 PM and 5:00 PM NPT time (9:00 AM–12:15 PM BST). That is roughly 3 hours 15 minutes of usable overlap.
Booking travel or deliveries: tracking BST local time against Kathmandu keeps pickup windows and arrival estimates honest across the -4h 45m offset.

Always state the zone abbreviation, not just the hour. "3:00 PM NPT" is unambiguous; "3 PM" across a -4h 45m gap is not.
Block 1:45 PM–5:00 PM NPT as the recurring meeting window if you work primarily from Kathmandu and need BST 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 BST (British Summer Time)

British Summer Time (BST) is the daylight saving period in the United Kingdom, when clocks move one hour forward from Greenwich Mean Time (GMT, UTC+00:00) to UTC+01:00. It runs from the last Sunday in March to the last Sunday in October. England, Scotland, Wales and Northern Ireland all follow it, along with the Isle of Man and the Channel Islands of Jersey and Guernsey. During BST, London is one hour ahead of UTC, four hours ahead of New York on Eastern Daylight Time, and five hours ahead of New York once the United States returns to Eastern Standard Time in November. BST is also used to abbreviate Bangladesh Standard Time (UTC+06:00), which is listed separately on this site.

Best time to call between Kathmandu and BST

Both Kathmandu and BST sit inside the 9 AM – 5 PM working day between 1:45 PM–5:00 PM NPT, which is 9:00 AM–12:15 PM BST. That gives roughly 3 hours and 15 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

Kathmandu and BST overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.

Kathmandu is 4 hours 45 minutes behind BST (NPT UTC+05:45 → BST UTC+01:00). The shared working window is 1:45 PM–5:00 PM NPT. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Kathmandu

Does not observe DST

BST

☀ Currently in DST

Standard: UTC+00:00 · DST: UTC+01:00

Clocks fall back on Sun, Oct 25, 2026

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 BST?

Kathmandu (NPT, UTC+05:45) is 4 hours 45 minutes behind BST (BST, UTC+01:00). The gap is currently -4h 45m.

How do I convert Kathmandu time to BST time?

Add -4h 45m to Kathmandu local time. For example, 9:00 AM in Kathmandu is 4:15 AM in BST.

What time is it in BST right now?

BST uses BST at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -4h 45m offset from Kathmandu.

What is the best time to call BST from Kathmandu?

Call between 1:45 PM and 5:00 PM NPT — that maps to 9:00 AM–12:15 PM BST and keeps both parties inside the working day.

Which is behind, Kathmandu or BST?

Kathmandu is 4 hours 45 minutes behind BST. When it is 12:00 PM in Kathmandu it is 7:15 AM in BST.

Do Kathmandu and BST use different time zones?

Kathmandu (Nepal) uses NPT at UTC+05:45, while BST uses BST at UTC+01:00. The IANA identifiers are Asia/Kathmandu and Europe/London.

Does daylight saving time affect the Kathmandu–BST difference?

Neither zone observes daylight saving time, so the -4h 45m offset between Kathmandu and BST 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 BST?

Not normally. The -4h 45m gap only pushes the date over the previous day.

What is the time difference between Kathmandu and BST?

BST is -4h 45m 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.