IST to ARBT Time Converter

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

Mumbai · India Standard Time
10:20:34
Saturday, May 23, 2026
GMT+5:30 · UTC+05:30
Riyadh · Arabia Standard Time
07:50:34
Saturday, May 23, 2026
GMT+3 · UTC+03:00

Convert a specific time

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

Daylight Saving status right now

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

When can IST and ARBT meet?

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

Hour-by-hour IST to ARBT conversion table

IST time (Mumbai)ARBT time (Riyadh)Status
00:00 Sat21:30 FriOff-hours both sides
01:00 Sat22:30 FriOff-hours both sides
02:00 Sat23:30 FriOff-hours both sides
03:00 Sat00:30 SatOff-hours both sides
04:00 Sat01:30 SatOff-hours both sides
05:00 Sat02:30 SatOff-hours both sides
06:00 Sat03:30 SatOff-hours both sides
07:00 Sat04:30 SatOff-hours both sides
08:00 Sat05:30 SatOff-hours both sides
09:00 Sat06:30 SatIST working
10:00 Sat07:30 SatIST working
11:00 Sat08:30 SatIST working
12:00 Sat09:30 SatBoth at work
13:00 Sat10:30 SatBoth at work
14:00 Sat11:30 SatBoth at work
15:00 Sat12:30 SatBoth at work
16:00 Sat13:30 SatBoth at work
17:00 Sat14:30 SatARBT working
18:00 Sat15:30 SatARBT working
19:00 Sat16:30 SatARBT working
20:00 Sat17:30 SatOff-hours both sides
21:00 Sat18:30 SatOff-hours both sides
22:00 Sat19:30 SatOff-hours both sides
23:00 Sat20:30 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

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

Sun today in Mumbai and Riyadh

Mumbai
Sunrise
06:03
Sunset
19:10
Solar noon
12:36
Daylight
13h 7m
Riyadh
Sunrise
05:07
Sunset
18:35
Solar noon
11:51
Daylight
13h 27m

Related converters

ARBT to IST (reverse)IST to ESTIST to PSTIST to GMTIST to UTCIST to CETEST to ARBTPST to ARBTGMT to ARBTUTC to ARBTCET to ARBT
Looking for local time? See time in Mumbai or time in Riyadh.

Frequently asked questions

What is the time difference between IST and ARBT right now?+
ARBT (Arabia Standard Time) is currently 2h 30m behind IST (India Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does IST or ARBT observe daylight saving time?+
IST: does not observe daylight saving time. ARBT: does not observe daylight saving time.
When is the best time to schedule a meeting between IST and ARBT?+
The strongest overlap is 12:00–16:00 IST (09:30–13:30 ARBT), giving 5 hours when both sides are within standard 9am-5pm working hours.
What time is it in Riyadh when it is 12:00 noon in Mumbai?+
When it is 12:00 Sat in Mumbai (IST), it is 09:30 Sat in Riyadh (ARBT).
Which IANA time zone identifiers are used for IST and ARBT?+
IST maps to "Asia/Kolkata" in the IANA database. ARBT maps to "Asia/Riyadh". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Mumbai ahead of or behind Riyadh?+
Whether Mumbai (IST) is ahead of or behind Riyadh (ARBT) depends on the current UTC offsets. Right now ARBT is 2h 30m behind IST. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for IST and ARBT?+
IST is UTC+05:30 (GMT+5:30) and ARBT is UTC+03:00 (GMT+3). 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 IST and ARBT?+
Yes. There are 5 hours of overlap during standard 9am-5pm working hours, with the strongest window at 12:00–16:00 IST.