WIB to IST
India Standard Time is 1 hour 30 minutes behind Western Indonesia Time, all year round.
WIB to IST conversion table
Every hour of the day, Western Indonesia Time to India Standard Time. The gap never changes, so this table holds on every date.
| WIB | IST |
|---|---|
| 12:00 AM | 10:30 PM −1 day |
| 1:00 AM | 11:30 PM −1 day |
| 2:00 AM | 12:30 AM |
| 3:00 AM | 1:30 AM |
| 4:00 AM | 2:30 AM |
| 5:00 AM | 3:30 AM |
| 6:00 AM | 4:30 AM |
| 7:00 AM | 5:30 AM |
| 8:00 AM | 6:30 AM |
| 9:00 AM | 7:30 AM |
| 10:00 AM | 8:30 AM |
| 11:00 AM | 9:30 AM |
| WIB | IST |
|---|---|
| 12:00 PM | 10:30 AM |
| 1:00 PM | 11:30 AM |
| 2:00 PM | 12:30 PM |
| 3:00 PM | 1:30 PM |
| 4:00 PM | 2:30 PM |
| 5:00 PM | 3:30 PM |
| 6:00 PM | 4:30 PM |
| 7:00 PM | 5:30 PM |
| 8:00 PM | 6:30 PM |
| 9:00 PM | 7:30 PM |
| 10:00 PM | 8:30 PM |
| 11:00 PM | 9:30 PM |
Shared working hours
Taking a working day as 09:00–17:00 in each zone, Western Indonesia Time and India Standard Time overlap for 6 hours 30 minutes.
10:30 AM–5:00 PM in WIB is 9:00 AM–3:30 PM in IST.
When the difference changes
It doesn't. India Standard Time is 1 hour 30 minutes behind Western Indonesia Time on every date of the year. Western Indonesia Time runs at UTC+07:00; India Standard Time runs at UTC+05:30.
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.
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.
How the difference is worked out
Neither Western Indonesia Time nor India Standard Time moves its clock relative to the other, so india standard time is 1 hour 30 minutes behind western indonesia 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 — India Standard Time is 1 hour 30 minutes behind Western Indonesia 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/Jakarta and Asia/Kolkata. Nothing is looked up on a server and nothing about your visit is recorded.
Is IST ahead of or behind WIB?
India Standard Time is 1 hour 30 minutes behind Western Indonesia Time, all year round. Western Indonesia Time runs at UTC+07:00; India Standard Time runs at UTC+05:30. Because neither zone changes its clock, the gap never moves.
What time is 9 AM WIB in IST?
9:00 AM WIB is 7:30 AM IST.
When can Western Indonesia Time and India Standard Time meet?
Taking a working day as 09:00–17:00 in each zone, the two overlap for 6 hours 30 minutes: 10:30 AM–5:00 PM in Western Indonesia Time, which is 9:00 AM–3:30 PM in India Standard Time.
What does WIB stand for?
WIB is Western Indonesia Time, also written Jakarta time, 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.