Clockjumper

Timezone conversion

AST to IST Time — Convert Atlantic Standard Time to India Standard Time

IST is currently 8h30m ahead of AST. The gap shifts across the year: around January it is 9h30m ahead of AST, and around July it is 8h30m ahead of AST, because one or both zones observe daylight saving.

IST is currently 8h30m ahead of AST.

AST • ADT (UTC-3)
2:14 PM
Wednesday, Jul 8
IST • GMT+5:30 (UTC+5:30)
10:44 PM
Wednesday, Jul 8

Abbreviation disambiguation

AST here means Atlantic Standard Time. Note: major collision: Arabia Standard Time (Asia/Riyadh) — page must disambiguate

IST here means India Standard Time. Note: major collisions: Israel Standard Time (Asia/Jerusalem), Irish Standard Time (Europe/Dublin) — canonical=India, page must disambiguate

Interactive converter

12:00PM

12
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00

Full AST to IST conversion table

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

Daylight saving and how the gap changes

Around January the AST → IST offset is 9h30m ahead of AST. Around July it is 8h30m ahead of AST. That swing comes from one or both zones observing daylight saving on different schedules — the converter above always reflects the correct offset for the date you pick.

Frequently asked questions

Is IST ahead of or behind AST right now?
IST is currently 8h30m ahead of AST.
What is the current AST to IST time difference?
Right now the gap is 8h30m ahead — IST is 8h30m ahead of AST.
Does the AST → IST offset change during the year?
Yes. Around January the offset is 9h30m ahead of AST; around July it is 8h30m ahead of AST. The converter above always reflects the correct offset for the date you pick.
Does AST observe daylight saving time?
Yes — Atlantic Standard Time observes DST, so its UTC offset shifts by 1 hour(s) between winter and summer.
Does IST observe daylight saving time?
No — India Standard Time stays at a fixed UTC offset year-round.
What time is 9 AM AST in IST?
9:00 AM AST is 5:30 PM IST.
What time is 12 PM (noon) AST in IST?
12:00 PM AST is 8:30 PM IST.
What time is 5 PM AST in IST?
5:00 PM AST is 1:30 AM (next day) IST.
When is the best time to schedule a call between AST and IST?
AST and IST have no direct 09:00–17:00 overlap on the same calendar day. Consider early-morning or late-evening slots on one side, or an asynchronous handoff.
What time zone does AST refer to?
AST refers to Atlantic Standard Time (IANA: America/Halifax).
What time zone does IST refer to?
IST refers to India Standard Time (IANA: Asia/Kolkata).
Is AST on this page the same as other zones that share the letters "AST"?
On Clockjumper, AST means Atlantic Standard Time. Disambiguation: major collision: Arabia Standard Time (Asia/Riyadh) — page must disambiguate
Is IST on this page the same as other zones that share the letters "IST"?
On Clockjumper, IST means India Standard Time. Disambiguation: major collisions: Israel Standard Time (Asia/Jerusalem), Irish Standard Time (Europe/Dublin) — canonical=India, page must disambiguate

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