IST to WAT
West Africa Time is 4 hours 30 minutes behind India Standard Time, all year round.
IST to WAT conversion table
Every hour of the day, India Standard Time to West Africa Time. The gap never changes, so this table holds on every date.
| IST | WAT |
|---|---|
| 12:00 AM | 7:30 PM −1 day |
| 1:00 AM | 8:30 PM −1 day |
| 2:00 AM | 9:30 PM −1 day |
| 3:00 AM | 10:30 PM −1 day |
| 4:00 AM | 11:30 PM −1 day |
| 5:00 AM | 12:30 AM |
| 6:00 AM | 1:30 AM |
| 7:00 AM | 2:30 AM |
| 8:00 AM | 3:30 AM |
| 9:00 AM | 4:30 AM |
| 10:00 AM | 5:30 AM |
| 11:00 AM | 6:30 AM |
| IST | WAT |
|---|---|
| 12:00 PM | 7:30 AM |
| 1:00 PM | 8:30 AM |
| 2:00 PM | 9:30 AM |
| 3:00 PM | 10:30 AM |
| 4:00 PM | 11:30 AM |
| 5:00 PM | 12:30 PM |
| 6:00 PM | 1:30 PM |
| 7:00 PM | 2:30 PM |
| 8:00 PM | 3:30 PM |
| 9:00 PM | 4:30 PM |
| 10:00 PM | 5:30 PM |
| 11:00 PM | 6:30 PM |
Shared working hours
Taking a working day as 09:00–17:00 in each zone, India Standard Time and West Africa Time overlap for 3 hours 30 minutes.
1:30 PM–5:00 PM in IST is 9:00 AM–12:30 PM in WAT.
When the difference changes
It doesn't. West Africa Time is 4 hours 30 minutes behind India Standard Time on every date of the year. India Standard Time runs at UTC+05:30; West Africa Time runs at UTC+01:00.
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 West Africa Time
West Africa Time is a fixed UTC+1, covering Nigeria, Cameroon, Angola and their neighbours. It shares its offset with Central European standard time for five months of the year and sits an hour behind it for the other seven, without moving.
Cities on this clock: Lagos, Kinshasa, Algiers, Tunis.
How the difference is worked out
Neither India Standard Time nor West Africa Time moves its clock relative to the other, so west africa time is 4 hours 30 minutes behind 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 — West Africa Time is 4 hours 30 minutes behind 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 Africa/Lagos. Nothing is looked up on a server and nothing about your visit is recorded.
Is WAT ahead of or behind IST?
West Africa Time is 4 hours 30 minutes behind India Standard Time, all year round. India Standard Time runs at UTC+05:30; West Africa Time runs at UTC+01:00. Because neither zone changes its clock, the gap never moves.
What time is 9 AM IST in WAT?
9:00 AM IST is 4:30 AM WAT.
When can India Standard Time and West Africa Time meet?
Taking a working day as 09:00–17:00 in each zone, the two overlap for 3 hours 30 minutes: 1:30 PM–5:00 PM in India Standard Time, which is 9:00 AM–12:30 PM in West Africa 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.