ARBT to IST Time Converter

Convert Arabia Standard Time (ARBT) to India Standard Time (IST). Both time zones are shown live below; current offset between them is 2h 30m ahead.

Riyadh · Arabia Standard Time
04:19:27
Friday, May 15, 2026
GMT+3 · UTC+03:00
Mumbai · India Standard Time
06:49:27
Friday, May 15, 2026
GMT+5:30 · UTC+05:30

Convert a specific time

From: ARBT (Riyadh)
To: IST (Mumbai)
--:--

Daylight Saving status right now

ARBT (Arabia Standard Time)
Observes DST
No
IST (India Standard Time)
Observes DST
No

When can ARBT and IST meet?

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01
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09
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ARBT
IST
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Riyadh (ARBT). Each row shows the local working-hours state in that zone for the same moment in time.
6 hours of overlap during standard 9am-5pm working hours.
Best meeting window: 09:00–14:00 ARBT (11:30–16:30 IST).

Hour-by-hour ARBT to IST conversion table

ARBT time (Riyadh)IST time (Mumbai)Status
00:00 Fri02:30 FriOff-hours both sides
01:00 Fri03:30 FriOff-hours both sides
02:00 Fri04:30 FriOff-hours both sides
03:00 Fri05:30 FriOff-hours both sides
04:00 Fri06:30 FriOff-hours both sides
05:00 Fri07:30 FriOff-hours both sides
06:00 Fri08:30 FriOff-hours both sides
07:00 Fri09:30 FriIST working
08:00 Fri10:30 FriIST working
09:00 Fri11:30 FriBoth at work
10:00 Fri12:30 FriBoth at work
11:00 Fri13:30 FriBoth at work
12:00 Fri14:30 FriBoth at work
13:00 Fri15:30 FriBoth at work
14:00 Fri16:30 FriBoth at work
15:00 Fri17:30 FriARBT working
16:00 Fri18:30 FriARBT working
17:00 Fri19:30 FriOff-hours both sides
18:00 Fri20:30 FriOff-hours both sides
19:00 Fri21:30 FriOff-hours both sides
20:00 Fri22:30 FriOff-hours both sides
21:00 Fri23:30 FriOff-hours both sides
22:00 Fri00:30 SatOff-hours both sides
23:00 Fri01:30 SatOff-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

Arabia Standard Time (ARBT)
IANA identifier
Asia/Riyadh
Current UTC offset
UTC+03:00
Current abbreviation
GMT+3
Major cities in this zone
RiyadhJeddah
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 Riyadh and Mumbai

Riyadh
Sunrise
05:11
Sunset
18:30
Solar noon
11:51
Daylight
13h 19m
Mumbai
Sunrise
06:05
Sunset
19:06
Solar noon
12:36
Daylight
13h 1m

Related converters

IST to ARBT (reverse)ARBT to ESTARBT to PSTARBT to GMTARBT to UTCARBT to CETEST to ISTPST to ISTGMT to ISTUTC to ISTCET to IST
Looking for local time? See time in Riyadh or time in Mumbai.

Frequently asked questions

What is the time difference between ARBT and IST right now?+
IST (India Standard Time) is currently 2h 30m ahead ARBT (Arabia Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does ARBT or IST observe daylight saving time?+
ARBT: does not observe daylight saving time. IST: does not observe daylight saving time.
When is the best time to schedule a meeting between ARBT and IST?+
The strongest overlap is 09:00–14:00 ARBT (11:30–16:30 IST), giving 6 hours when both sides are within standard 9am-5pm working hours.
What time is it in Mumbai when it is 12:00 noon in Riyadh?+
When it is 12:00 Fri in Riyadh (ARBT), it is 14:30 Fri in Mumbai (IST).
Which IANA time zone identifiers are used for ARBT and IST?+
ARBT maps to "Asia/Riyadh" 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 Riyadh ahead of or behind Mumbai?+
Whether Riyadh (ARBT) is ahead of or behind Mumbai (IST) depends on the current UTC offsets. Right now IST is 2h 30m ahead ARBT. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for ARBT and IST?+
ARBT is UTC+03:00 (GMT+3) 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 ARBT and IST?+
Yes. There are 6 hours of overlap during standard 9am-5pm working hours, with the strongest window at 09:00–14:00 ARBT.