WAT to IST Time Converter

Convert West Africa Time (WAT) to India Standard Time (IST). Both time zones are shown live below; current offset between them is 4h 30m ahead.

Lagos · West Africa Time
02:29:12
Wednesday, May 13, 2026
GMT+1 · UTC+01:00
Mumbai · India Standard Time
06:59:12
Wednesday, May 13, 2026
GMT+5:30 · UTC+05:30

Convert a specific time

From: WAT (Lagos)
To: IST (Mumbai)
--:--

Daylight Saving status right now

WAT (West Africa Time)
Observes DST
No
IST (India Standard Time)
Observes DST
No

When can WAT and IST meet?

00
01
02
03
04
05
06
07
08
09
10
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12
13
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16
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WAT
IST
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Lagos (WAT). Each row shows the local working-hours state in that zone for the same moment in time.
4 hours of overlap during standard 9am-5pm working hours.
Best meeting window: 09:00–12:00 WAT (13:30–16:30 IST).

Hour-by-hour WAT to IST conversion table

WAT time (Lagos)IST time (Mumbai)Status
00:00 Wed04:30 WedOff-hours both sides
01:00 Wed05:30 WedOff-hours both sides
02:00 Wed06:30 WedOff-hours both sides
03:00 Wed07:30 WedOff-hours both sides
04:00 Wed08:30 WedOff-hours both sides
05:00 Wed09:30 WedIST working
06:00 Wed10:30 WedIST working
07:00 Wed11:30 WedIST working
08:00 Wed12:30 WedIST working
09:00 Wed13:30 WedBoth at work
10:00 Wed14:30 WedBoth at work
11:00 Wed15:30 WedBoth at work
12:00 Wed16:30 WedBoth at work
13:00 Wed17:30 WedWAT working
14:00 Wed18:30 WedWAT working
15:00 Wed19:30 WedWAT working
16:00 Wed20:30 WedWAT working
17:00 Wed21:30 WedOff-hours both sides
18:00 Wed22:30 WedOff-hours both sides
19:00 Wed23:30 WedOff-hours both sides
20:00 Wed00:30 ThuOff-hours both sides
21:00 Wed01:30 ThuOff-hours both sides
22:00 Wed02:30 ThuOff-hours both sides
23:00 Wed03:30 ThuOff-hours both sides

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

West Africa Time (WAT)
IANA identifier
Africa/Lagos
Current UTC offset
UTC+01:00
Current abbreviation
GMT+1
Major cities in this zone
LagosAbuja
India Standard Time (IST)
IANA identifier
Asia/Kolkata
Current UTC offset
UTC+05:30
Current abbreviation
GMT+5:30
Major cities in this zone
MumbaiNew DelhiBangaloreChennaiKolkata

Sun today in Lagos and Mumbai

Lagos
Sunrise
06:31
Sunset
18:56
Solar noon
12:44
Daylight
12h 24m
Mumbai
Sunrise
06:06
Sunset
19:06
Solar noon
12:36
Daylight
13h 0m

Related converters

IST to WAT (reverse)WAT to ESTWAT to PSTWAT to GMTWAT to UTCWAT to CETEST to ISTPST to ISTGMT to ISTUTC to ISTCET to IST
Looking for local time? See time in Lagos or time in Mumbai.

Frequently asked questions

What is the time difference between WAT and IST right now?+
IST (India Standard Time) is currently 4h 30m ahead WAT (West Africa Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does WAT or IST observe daylight saving time?+
WAT: does not observe daylight saving time. IST: does not observe daylight saving time.
When is the best time to schedule a meeting between WAT and IST?+
The strongest overlap is 09:00–12:00 WAT (13:30–16:30 IST), giving 4 hours when both sides are within standard 9am-5pm working hours.
What time is it in Mumbai when it is 12:00 noon in Lagos?+
When it is 12:00 Wed in Lagos (WAT), it is 16:30 Wed in Mumbai (IST).
Which IANA time zone identifiers are used for WAT and IST?+
WAT maps to "Africa/Lagos" in the IANA database. IST maps to "Asia/Kolkata". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Lagos ahead of or behind Mumbai?+
Whether Lagos (WAT) is ahead of or behind Mumbai (IST) depends on the current UTC offsets. Right now IST is 4h 30m ahead WAT. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for WAT and IST?+
WAT is UTC+01:00 (GMT+1) and IST is UTC+05:30 (GMT+5:30). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both WAT and IST?+
Yes. There are 4 hours of overlap during standard 9am-5pm working hours, with the strongest window at 09:00–12:00 WAT.