London to NPT
+4h 45mLondon
BSTSOURCENPT
NPTGreen rows indicate typical business hours (9 AM - 5 PM)
BST and NPT on the World Map
The map below highlights the BST (Greenwich Mean Time) and NPT (Nepal Time) timezone regions across the globe.
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.
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.
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.
Understanding the +4h 45m Gap: London vs NPT
London runs on British Summer Time (BST) at UTC+01:00, currently observing daylight saving time. NPT runs on Nepal Time (NPT) at UTC+05:45. That puts London 4 hours 45 minutes ahead of NPT — a difference of +4h 45m at the current offsets.
In practice, when it is 9:00 AM in London it is 1:45 PM in NPT. Midnight in London is 4:45 AM in NPT.London observes daylight saving time while NPT does not, so the gap narrows or widens by an hour part of the year.
London to NPT time conversion table
| London (BST) | NPT (NPT) | Day |
|---|---|---|
| 12:00 AM | 4:45 AM | same day |
| 6:00 AM | 10:45 AM | same day |
| 7:00 AM | 11:45 AM | same day |
| 8:00 AM | 12:45 PM | same day |
| 9:00 AM | 1:45 PM | same day |
| 12:00 PM | 4:45 PM | same day |
| 3:00 PM | 7:45 PM | same day |
| 5:00 PM | 9:45 PM | same day |
| 6:00 PM | 10:45 PM | same day |
| 9:00 PM | 1:45 AM | next day |
Why people convert London to NPT time
- Scheduling a call from London to NPT: a 10:00 AM start in London lands at 2:45 PM in NPT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both London and NPT are inside the 9-to-5 working day between 9:00 AM and 12:15 PM BST time (1:45 PM–5:00 PM NPT). That is roughly 3 hours 15 minutes of usable overlap.
- Coordinating a London-based team with NPT 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 BST" is unambiguous; "3 PM" across a +4h 45m gap is not.
- Block 9:00 AM–12:15 PM BST as the recurring meeting window if you work primarily from London and need NPT colleagues present.
- London: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the +4h 45m gap.
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.
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 London and NPT
Both London and NPT sit inside the 9 AM – 5 PM working day between 9:00 AM–12:15 PM BST, which is 1:45 PM–5:00 PM NPT. That gives roughly 3 hours and 15 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
London and NPT overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
London is 4 hours 45 minutes ahead of NPT (BST UTC+01:00 → NPT UTC+05:45). The shared working window is 9:00 AM–12:15 PM BST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
London
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
NPT
Does not observe DST
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 London and NPT?
London (BST, UTC+01:00) is 4 hours 45 minutes ahead of NPT (NPT, UTC+05:45). The gap is currently +4h 45m.
How do I convert London time to NPT time?
Add +4h 45m to London local time. For example, 9:00 AM in London is 1:45 PM 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 +4h 45m offset from London.
What is the best time to call NPT from London?
Call between 9:00 AM and 12:15 PM BST — that maps to 1:45 PM–5:00 PM NPT and keeps both parties inside the working day.
Which is ahead, London or NPT?
London is 4 hours 45 minutes ahead of NPT. When it is 12:00 PM in London it is 4:45 PM in NPT.
Do London and NPT use different time zones?
London (UK) uses BST at UTC+01:00, while NPT uses NPT at UTC+05:45. The IANA identifiers are Europe/London and Asia/Kathmandu.
Does daylight saving time affect the London–NPT difference?
Yes at the moment: London is on daylight saving time and NPT is not, so the +4h 45m gap shifts by an hour when exactly one of them changes clocks.
Which other cities share London's time zone?
BST also covers London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar and 5 more.
Which countries use BST, London's zone?
BST is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, Mali, Mauritania and 7 more.
Is there a day difference between London and NPT?
Not normally. The +4h 45m gap only pushes the date over for late-evening times.
What is the time difference between London and NPT?
NPT is +4h 45m from London.
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 timezone is NPT in?
NPT operates on its local timezone.
What are the business hours in London?
Standard business hours in London are 9:00 AM - 5:00 PM GMT.
Which countries use GMT (Greenwich Mean Time)?
GMT is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, and 9 more countries.
Does GMT observe daylight saving time?
Yes, GMT switches to BST during summer months.
What are some interesting facts about GMT?
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.
Which cities are in the NPT timezone?
Major cities in the NPT timezone include Kathmandu, Pokhara, Lalitpur, Bharatpur, Biratnagar.
What is the UTC offset for NPT?
Nepal Time (NPT) is at UTC+05:45.
What should I know about the NPT timezone?
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.
When is it midnight in London, what time is it in NPT?
When it is 12:00 AM (midnight) in London (GMT), it is +4h 45m later in NPT (NPT).
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