London to Indonesia
+6hLondon
BSTSOURCEIndonesia
WIBGreen rows indicate typical business hours (9 AM - 5 PM)
BST and WIB on the World Map
The map below highlights the BST (Greenwich Mean Time) and WIB (Western Indonesia 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.
WIB – Western Indonesia Time
UTC+07:00Western Indonesia Time (WIB, UTC+07:00) covers Java, Sumatra and West Kalimantan, including Jakarta.
- •Indonesia spans three time zones: WIB (UTC+07:00), WITA (UTC+08:00) and WIT (UTC+09:00).
- •Indonesia has not observed daylight saving time since 1964.
- •Jakarta is the largest city in Southeast Asia by population.
- •WIB shares the UTC+07:00 offset with Indochina Time.
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.
Time Conversion Guide: London to Indonesia
London runs on British Summer Time (BST) at UTC+01:00, currently observing daylight saving time. Indonesia runs on Western Indonesia Time (WIB) at UTC+07:00. That puts London 6 hours ahead of Indonesia — a difference of +6h at the current offsets.
In practice, when it is 9:00 AM in London it is 3:00 PM in Indonesia. Midnight in London is 6:00 AM in Indonesia.London observes daylight saving time while Indonesia does not, so the gap narrows or widens by an hour part of the year.
London to Indonesia time conversion table
| London (BST) | Indonesia (WIB) | Day |
|---|---|---|
| 12:00 AM | 6:00 AM | same day |
| 6:00 AM | 12:00 PM | same day |
| 7:00 AM | 1:00 PM | same day |
| 8:00 AM | 2:00 PM | same day |
| 9:00 AM | 3:00 PM | same day |
| 12:00 PM | 6:00 PM | same day |
| 3:00 PM | 9:00 PM | same day |
| 5:00 PM | 11:00 PM | same day |
| 6:00 PM | 12:00 AM | next day |
| 9:00 PM | 3:00 AM | next day |
Why people convert London to Indonesia time
- Scheduling a call from London to Indonesia: a 10:00 AM start in London lands at 4:00 PM in Indonesia, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both London and Indonesia are inside the 9-to-5 working day between 9:00 AM and 11:00 AM BST time (3:00 PM–5:00 PM WIB). That is roughly 2 hours of usable overlap.
- Watching a live event or market open: London viewers need 3:00 PM in Indonesia to catch a 9:00 AM start there, and 6:00 PM if the event is anchored to London.
- Always state the zone abbreviation, not just the hour. "3:00 PM BST" is unambiguous; "3 PM" across a +6h gap is not.
- Block 9:00 AM–11:00 AM BST as the recurring meeting window if you work primarily from London and need Indonesia 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 +6h 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 WIB (Western Indonesia Time)
Western Indonesia Time (WIB, Waktu Indonesia Barat) is one of Indonesia's three time zones, fixed at UTC+07:00 all year. It covers Java, Sumatra, West Kalimantan and the provinces around them — home to Jakarta, the country's capital and largest city, plus Surabaya and Bandung. Indonesia does not observe daylight saving time, so WIB never shifts. WIB shares its UTC+07:00 offset with Indochina Time (ICT) and Christmas Island Time, but is a distinct zone covering the western half of the Indonesian archipelago. The country's other zones are WITA (UTC+08:00) in the centre and WIT (UTC+09:00) in the east.
Best time to call between London and Indonesia
Both London and Indonesia sit inside the 9 AM – 5 PM working day between 9:00 AM–11:00 AM BST, which is 3:00 PM–5:00 PM WIB. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
London and Indonesia overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
London is 6 hours ahead of Indonesia (BST UTC+01:00 → WIB UTC+07:00). The shared working window is 9:00 AM–11:00 AM 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
Indonesia
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 Indonesia?
London (BST, UTC+01:00) is 6 hours ahead of Indonesia (WIB, UTC+07:00). The gap is currently +6h.
How do I convert London time to Indonesia time?
Add +6h to London local time. For example, 9:00 AM in London is 3:00 PM in Indonesia.
What time is it in Indonesia right now?
Indonesia uses WIB at UTC+07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +6h offset from London.
What is the best time to call Indonesia from London?
Call between 9:00 AM and 11:00 AM BST — that maps to 3:00 PM–5:00 PM WIB and keeps both parties inside the working day.
Which is ahead, London or Indonesia?
London is 6 hours ahead of Indonesia. When it is 12:00 PM in London it is 6:00 PM in Indonesia.
Do London and Indonesia use different time zones?
London (UK) uses BST at UTC+01:00, while Indonesia (Indonesia) uses WIB at UTC+07:00. The IANA identifiers are Europe/London and Asia/Jakarta.
Does daylight saving time affect the London–Indonesia difference?
Yes at the moment: London is on daylight saving time and Indonesia is not, so the +6h 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 Indonesia?
Not normally. The +6h gap only pushes the date over for late-evening times.
What is the time difference between London and Indonesia?
Indonesia is +6h 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 Indonesia in?
Indonesia 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 WIB timezone?
Major cities in the WIB timezone include Jakarta, Surabaya, Bandung, Medan, Palembang.
What is the UTC offset for WIB?
Western Indonesia Time (WIB) is at UTC+07:00.
What should I know about the WIB timezone?
Indonesia spans three time zones: WIB (UTC+07:00), WITA (UTC+08:00) and WIT (UTC+09:00). Indonesia has not observed daylight saving time since 1964.
When is it midnight in London, what time is it in Indonesia?
When it is 12:00 AM (midnight) in London (GMT), it is +6h later in Indonesia (WIB).
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