IST to WIB
Western Indonesia Time is 1 hour 30 minutes ahead of India Standard Time, all year round.
IST to WIB conversion table
Every hour of the day, India Standard Time to Western Indonesia Time. The gap never changes, so this table holds on every date.
| IST | WIB |
|---|---|
| 12:00 AM | 1:30 AM |
| 1:00 AM | 2:30 AM |
| 2:00 AM | 3:30 AM |
| 3:00 AM | 4:30 AM |
| 4:00 AM | 5:30 AM |
| 5:00 AM | 6:30 AM |
| 6:00 AM | 7:30 AM |
| 7:00 AM | 8:30 AM |
| 8:00 AM | 9:30 AM |
| 9:00 AM | 10:30 AM |
| 10:00 AM | 11:30 AM |
| 11:00 AM | 12:30 PM |
| IST | WIB |
|---|---|
| 12:00 PM | 1:30 PM |
| 1:00 PM | 2:30 PM |
| 2:00 PM | 3:30 PM |
| 3:00 PM | 4:30 PM |
| 4:00 PM | 5:30 PM |
| 5:00 PM | 6:30 PM |
| 6:00 PM | 7:30 PM |
| 7:00 PM | 8:30 PM |
| 8:00 PM | 9:30 PM |
| 9:00 PM | 10:30 PM |
| 10:00 PM | 11:30 PM |
| 11:00 PM | 12:30 AM +1 day |
Shared working hours
Taking a working day as 09:00–17:00 in each zone, India Standard Time and Western Indonesia Time overlap for 6 hours 30 minutes.
9:00 AM–3:30 PM in IST is 10:30 AM–5:00 PM in WIB.
When the difference changes
It doesn't. Western Indonesia Time is 1 hour 30 minutes ahead of India Standard Time on every date of the year. India Standard Time runs at UTC+05:30; Western Indonesia Time runs at UTC+07:00.
About India Standard Time
India keeps one clock, UTC+5:30, across a country spanning about 29 degrees of longitude — the sun rises nearly two hours earlier in Arunachal Pradesh than in Gujarat on the same clock. The half-hour offset means most conversions from India land on the half hour rather than the hour. Sri Lanka keeps the same time.
Cities on this clock: Mumbai, Delhi, Bangalore, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad.
Watch out: IST is also Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1). This page is the Indian one.
About Western Indonesia Time
Indonesia spans three zones; WIB is the western one, at a fixed UTC+7, and it covers Jakarta, Sumatra and most of the population. Central Indonesia is an hour ahead and the east two, so "Indonesia time" is only unambiguous once you know which.
Cities on this clock: Jakarta, Bangkok, Ho Chi Minh City, Hanoi, Phnom Penh.
How the difference is worked out
Neither India Standard Time nor Western Indonesia Time moves its clock relative to the other, so western indonesia time is 1 hour 30 minutes ahead of india standard time is a rule rather than a fact about one particular year. The hour-by-hour table above holds on every date.
With both zones on their own standard time — daylight saving not in force anywhere — Western Indonesia Time is 1 hour 30 minutes ahead of India Standard Time. That figure never changes; everything else on this page follows from it plus whichever clocks have moved.
Every figure here comes from the IANA time zone database via your browser's own Intl engine, using the zone ids Asia/Kolkata and Asia/Jakarta. Nothing is looked up on a server and nothing about your visit is recorded.
Is WIB ahead of or behind IST?
Western Indonesia Time is 1 hour 30 minutes ahead of India Standard Time, all year round. India Standard Time runs at UTC+05:30; Western Indonesia Time runs at UTC+07:00. Because neither zone changes its clock, the gap never moves.
What time is 9 AM IST in WIB?
9:00 AM IST is 10:30 AM WIB.
When can India Standard Time and Western Indonesia Time meet?
Taking a working day as 09:00–17:00 in each zone, the two overlap for 6 hours 30 minutes: 9:00 AM–3:30 PM in India Standard Time, which is 10:30 AM–5:00 PM in Western Indonesia Time.
What does IST stand for?
IST is India Standard Time, also written India time, Delhi time, Mumbai time. IST is also Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1). This page is the Indian one.