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What is IST in WAT?

West Africa Time is 4 hours 30 minutes behind

India Standard Time is on UTC+5:30 and West Africa Time is on UTC+1:00 right now. That gap holds all year, because both zones change their clocks together.

Time in New Delhi
6:22:39 PM
Time in Lagos
1:52:39 PM
Difference
−4:30 h
Next clock change
Neither zone

Convert a time

WAT — West Africa Time

1:30 pm

WAT, Fri

Daylight saving

India Standard Time

No clock changes

India Standard Time stays on IST all year, so its offset from UTC never moves.

West Africa Time

No clock changes

West Africa Time stays on WAT all year, so its offset from UTC never moves.

IST to WAT conversion table

Every hour of Friday, September 25, 2026, converted from India Standard Time to West Africa Time. 5 of the 24 hours fall on a different calendar day in Lagos, which is marked.

12:00 am IST
7:30 pm WAT−1 day
1:00 am IST
8:30 pm WAT−1 day
2:00 am IST
9:30 pm WAT−1 day
3:00 am IST
10:30 pm WAT−1 day
4:00 am IST
11:30 pm WAT−1 day
5:00 am IST
12:30 am WAT
6:00 am IST
1:30 am WAT
7:00 am IST
2:30 am WAT
8:00 am IST
3:30 am WAT
9:00 am IST
4:30 am WAT
10:00 am IST
5:30 am WAT
11:00 am IST
6:30 am WAT
12:00 pm IST
7:30 am WAT
1:00 pm IST
8:30 am WAT
2:00 pm IST
9:30 am WAT
3:00 pm IST
10:30 am WAT
4:00 pm IST
11:30 am WAT
5:00 pm IST
12:30 pm WAT
6:00 pm IST
1:30 pm WAT
7:00 pm IST
2:30 pm WAT
8:00 pm IST
3:30 pm WAT
9:00 pm IST
4:30 pm WAT
10:00 pm IST
5:30 pm WAT
11:00 pm IST
6:30 pm WAT

Scheduling between the two

Working hours overlap from 2:00 pm to 6:00 pm IST, which is 9:30 am to 1:30 pm WAT. Anything inside that window falls in the normal working day at both ends.

A note on IST: it can also mean Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1). This page means India Standard Time, which is what almost all searches for IST want.

India Standard Time (IST) is used in all of India and Sri Lanka, on a single UTC+5:30 offset with no daylight saving

West Africa Time (WAT) is used in Nigeria, Algeria, Angola and Cameroon

Other conversions