Kathmandu to London
-4h 45mKathmandu
NPTSOURCELondon
BSTGreen 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 (Greenwich Mean Time) timezone regions across the globe.
NPT – Nepal Time
UTC+05:45Nepal 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.
- •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.
GMT – Greenwich Mean Time
UTC+00:00Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+00:00.
- •GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London.
- •The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
- •GMT and UTC are often used interchangeably, but UTC is based on atomic clocks.
- •Iceland uses GMT year-round and never observes daylight saving time.
- •The UK switches from GMT to BST (British Summer Time) in late March each year.
About Kathmandu
WikipediaKathmandu 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.
Nepal Time (NPT) is one of only three timezones offset by 45 minutes (UTC+5:45).
About London
WikipediaLondon, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.
Big Ben is actually the name of the bell inside the Elizabeth Tower, not the tower itself.
Kathmandu to London Time Difference – Complete Guide
Kathmandu runs on Nepal Time (NPT) at UTC+05:45. London runs on British Summer Time (BST) at UTC+01:00, also currently on daylight saving time. That puts Kathmandu 4 hours 45 minutes behind London — 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 London. Midnight in Kathmandu is 7:15 PM in London.London observes daylight saving time while Kathmandu does not, so the gap narrows or widens by an hour part of the year.
Kathmandu to London time conversion table
| Kathmandu (NPT) | London (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 London time
- Scheduling a call from Kathmandu to London: a 10:00 AM start in Kathmandu lands at 5:15 AM in London, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Kathmandu and London 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.
- Watching a live event or market open: Kathmandu viewers need 4:15 AM in London to catch a 9:00 AM start there, and 4:45 AM if the event is anchored to Kathmandu.
- 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 London colleagues present.
- London: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.
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 GMT (Greenwich Mean Time)
Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.
Best time to call between Kathmandu and London
Both Kathmandu and London 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 London 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 London (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
London
☀ 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:
Frequently Asked Questions
What is the time difference between Kathmandu and London?
Kathmandu (NPT, UTC+05:45) is 4 hours 45 minutes behind London (BST, UTC+01:00). The gap is currently -4h 45m.
How do I convert Kathmandu time to London time?
Add -4h 45m to Kathmandu local time. For example, 9:00 AM in Kathmandu is 4:15 AM in London.
What time is it in London right now?
London 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 London 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 London?
Kathmandu is 4 hours 45 minutes behind London. When it is 12:00 PM in Kathmandu it is 7:15 AM in London.
Do Kathmandu and London use different time zones?
Kathmandu (Nepal) uses NPT at UTC+05:45, while London (UK) uses BST at UTC+01:00. The IANA identifiers are Asia/Kathmandu and Europe/London.
Does daylight saving time affect the Kathmandu–London difference?
Yes at the moment: London is on daylight saving time and Kathmandu is not, so the -4h 45m gap shifts by an hour when exactly one of them changes clocks.
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 London?
Not normally. The -4h 45m gap only pushes the date over the previous day.
What is the time difference between Kathmandu and London?
London 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.
What timezone is London in?
London, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.
What are the business hours in Kathmandu?
Standard business hours in Kathmandu are 10:00 AM - 5:00 PM NPT.
What are the business hours in London?
Standard business hours in London are 9:00 AM - 5:00 PM GMT.
What is the best time to schedule a call between Kathmandu and London?
The best overlap for a call is when both cities are in business hours. Kathmandu works 10:00 AM - 5:00 PM NPT and London works 9:00 AM - 5:00 PM GMT (-4h 45m difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Kathmandu and London?
Kathmandu uses NPR (रू) while London uses GBP (£). Check current exchange rates when planning travel or business between these cities.
How do Kathmandu and London compare in size?
Kathmandu has a population of approximately 1.4 million (metro: 3.0 million), while London has approximately 8.8 million (metro: 14.8 million).
What are the major landmarks in Kathmandu and London?
Kathmandu is known for Boudhanath Stupa, Swayambhunath, Durbar Square. London is famous for Big Ben, Tower Bridge, Buckingham Palace.
Do Kathmandu and London have stock exchanges?
Yes. Kathmandu has the NEPSE (Nepal Stock Exchange) and London has the LSE (London Stock Exchange). The -4h 45m time difference affects trading hour overlaps between these exchanges.
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 GMT timezone?
Major cities in the GMT timezone include London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar.
What is the UTC offset for GMT?
Greenwich Mean Time (GMT) is at UTC+00:00. During daylight saving time, it shifts to BST.
What should I know about the GMT timezone?
GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London. The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
When is it midnight in Kathmandu, what time is it in London?
When it is 12:00 AM (midnight) in Kathmandu (NPT), it is -4h 45m later in London (GMT).
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