Indonesia to United Kingdom
-6hIndonesia
WIBSOURCEUnited Kingdom
BSTGreen rows indicate typical business hours (9 AM - 5 PM)
WIB and BST on the World Map
The map below highlights the WIB (Western Indonesia Time) and BST (Greenwich Mean Time) timezone regions across the globe.
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.
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.
Indonesia vs United Kingdom: Offsets, DST and Best Call Times
Indonesia runs on Western Indonesia Time (WIB) at UTC+07:00. United Kingdom runs on British Summer Time (BST) at UTC+01:00, also currently on daylight saving time. That puts Indonesia 6 hours behind United Kingdom — a difference of -6h at the current offsets.
In practice, when it is 9:00 AM in Indonesia it is 3:00 AM in United Kingdom. Midnight in Indonesia is 6:00 PM in United Kingdom.United Kingdom observes daylight saving time while Indonesia does not, so the gap narrows or widens by an hour part of the year.
Indonesia to United Kingdom time conversion table
| Indonesia (WIB) | United Kingdom (BST) | Day |
|---|---|---|
| 12:00 AM | 6:00 PM | previous day |
| 6:00 AM | 12:00 AM | same day |
| 7:00 AM | 1:00 AM | same day |
| 8:00 AM | 2:00 AM | same day |
| 9:00 AM | 3:00 AM | same day |
| 12:00 PM | 6:00 AM | same day |
| 3:00 PM | 9:00 AM | same day |
| 5:00 PM | 11:00 AM | same day |
| 6:00 PM | 12:00 PM | same day |
| 9:00 PM | 3:00 PM | same day |
Why people convert Indonesia to United Kingdom time
- Scheduling a call from Indonesia to United Kingdom: a 10:00 AM start in Indonesia lands at 4:00 AM in United Kingdom, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Indonesia and United Kingdom are inside the 9-to-5 working day between 3:00 PM and 5:00 PM WIB time (9:00 AM–11:00 AM BST). That is roughly 2 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Indonesia is 2:00 PM in United Kingdom makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM WIB" is unambiguous; "3 PM" across a -6h gap is not.
- Block 3:00 PM–5:00 PM WIB as the recurring meeting window if you work primarily from Indonesia and need United Kingdom colleagues present.
- United Kingdom: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.
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.
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 Indonesia and United Kingdom
Both Indonesia and United Kingdom sit inside the 9 AM – 5 PM working day between 3:00 PM–5:00 PM WIB, which is 9:00 AM–11:00 AM BST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Indonesia and United Kingdom overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
Indonesia is 6 hours behind United Kingdom (WIB UTC+07:00 → BST UTC+01:00). The shared working window is 3:00 PM–5:00 PM WIB. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Indonesia
Does not observe DST
United Kingdom
☀ 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 Indonesia and United Kingdom?
Indonesia (WIB, UTC+07:00) is 6 hours behind United Kingdom (BST, UTC+01:00). The gap is currently -6h.
How do I convert Indonesia time to United Kingdom time?
Add -6h to Indonesia local time. For example, 9:00 AM in Indonesia is 3:00 AM in United Kingdom.
What time is it in United Kingdom right now?
United Kingdom 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 -6h offset from Indonesia.
What is the best time to call United Kingdom from Indonesia?
Call between 3:00 PM and 5:00 PM WIB — that maps to 9:00 AM–11:00 AM BST and keeps both parties inside the working day.
Which is behind, Indonesia or United Kingdom?
Indonesia is 6 hours behind United Kingdom. When it is 12:00 PM in Indonesia it is 6:00 AM in United Kingdom.
Do Indonesia and United Kingdom use different time zones?
Indonesia (Indonesia) uses WIB at UTC+07:00, while United Kingdom (United Kingdom) uses BST at UTC+01:00. The IANA identifiers are Asia/Jakarta and Europe/London.
Does daylight saving time affect the Indonesia–United Kingdom difference?
Yes at the moment: United Kingdom 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 Indonesia's time zone?
WIB also covers Jakarta, Surabaya, Bandung, Medan, Palembang.
Which countries use WIB, Indonesia's zone?
WIB is used in Indonesia (Java, Sumatra, West Kalimantan).
Is there a day difference between Indonesia and United Kingdom?
Not normally. The -6h gap only pushes the date over the previous day.
What is the time difference between Indonesia and United Kingdom?
United Kingdom is -6h from Indonesia.
What timezone is Indonesia in?
Indonesia operates on its local timezone.
What timezone is United Kingdom in?
United Kingdom operates on its local timezone.
Which countries use WIB (Western Indonesia Time)?
WIB is used in Indonesia (Java, Sumatra, West Kalimantan).
Does WIB observe daylight saving time?
No, WIB does not observe daylight saving time and remains at UTC+07:00 year-round.
What are some interesting facts about WIB?
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.
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 Indonesia, what time is it in United Kingdom?
When it is 12:00 AM (midnight) in Indonesia (WIB), it is -6h later in United Kingdom (GMT).
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