Time zone converter

IST to WAT

West Africa Time (WAT) is 4 hours 30 minutes behind India Standard Time (IST) all year: 9:00 AM IST is 4:30 AM WAT.

India Standard Time
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Current time in India Standard Time
West Africa Time
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Current time in West Africa Time
Pick a date and time to convert.

WAT vs IST over the next 12 months

PeriodWAT isExample
Oct 23, 2026 onwards4 hours 30 minutes behind9:00 AM IST = 4:30 AM WAT

IST to WAT conversion table

Every hour of a weekday around Oct 23, 2026, in both zones.

India Standard TimeWest Africa Time
12:00 AM7:30 PM (previous day)
1:00 AM8:30 PM (previous day)
2:00 AM9:30 PM (previous day)
3:00 AM10:30 PM (previous day)
4:00 AM11:30 PM (previous day)
5:00 AM12:30 AM
6:00 AM1:30 AM
7:00 AM2:30 AM
8:00 AM3:30 AM
9:00 AM4:30 AM
10:00 AM5:30 AM
11:00 AM6:30 AM
12:00 PM7:30 AM
1:00 PM8:30 AM
2:00 PM9:30 AM
3:00 PM10:30 AM
4:00 PM11:30 AM
5:00 PM12:30 PM
6:00 PM1:30 PM
7:00 PM2:30 PM
8:00 PM3:30 PM
9:00 PM4:30 PM
10:00 PM5:30 PM
11:00 PM6:30 PM

Best time for a meeting

Normal 9-to-5 working hours overlap for 3 hours 30 minutes on a weekday: 1:30 PM–5:00 PM IST, which is 9:00 AM–12:30 PM WAT.

Comparing more than two places? The meeting planner lines up working hours for up to six cities.

Daylight saving time

Neither IST nor WAT changes its clocks, so the difference is the same all year.

Where these clocks are used

  • India Standard Time (IST): all of India: Mumbai, Delhi, Bengaluru, Chennai. IANA zone Asia/Kolkata.
  • West Africa Time (WAT): Lagos, Kinshasa, Luanda. IANA zone Africa/Lagos.

Questions

What time is it in WAT when it is 9 AM IST?

On Oct 23, 2026, 9:00 AM IST is 4:30 AM WAT.

How many hours behind IST is WAT?

WAT is always 4 hours 30 minutes behind IST.

Do IST and WAT observe daylight saving time?

India Standard Time stays on UTC+5:30 all year. West Africa Time stays on UTC+1 all year.

What is the best time for a meeting between IST and WAT?

Normal 9-to-5 working hours overlap for 3 hours 30 minutes on a weekday: 1:30 PM–5:00 PM IST, which is 9:00 AM–12:30 PM WAT.

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Related conversions

Computed from the IANA time zone database on Oct 23, 2026. Live clocks and the converter use your browser's copy of the same data.