Timezone conversion
GMT to IST Time — Convert Greenwich Mean Time to India Standard Time
IST is currently 4h30m ahead of GMT. The gap shifts across the year: around January it is 5h30m ahead of GMT, and around July it is 4h30m ahead of GMT, because one or both zones observe daylight saving.
IST is currently 4h30m ahead of GMT.
Abbreviation disambiguation
GMT here means Greenwich Mean Time. Note: equals UTC; UK winter time
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
Full GMT to IST conversion table
| GMT | IST |
|---|---|
| 12:00 AM | 4:30 AM |
| 1:00 AM | 5:30 AM |
| 2:00 AM | 6:30 AM |
| 3:00 AM | 7:30 AM |
| 4:00 AM | 8:30 AM |
| 5:00 AM | 9:30 AM |
| 6:00 AM | 10:30 AM |
| 7:00 AM | 11:30 AM |
| 8:00 AM | 12:30 PM |
| 9:00 AM | 1:30 PM |
| 10:00 AM | 2:30 PM |
| 11:00 AM | 3:30 PM |
| 12:00 PM | 4:30 PM |
| 1:00 PM | 5:30 PM |
| 2:00 PM | 6:30 PM |
| 3:00 PM | 7:30 PM |
| 4:00 PM | 8:30 PM |
| 5:00 PM | 9:30 PM |
| 6:00 PM | 10:30 PM |
| 7:00 PM | 11:30 PM |
| 8:00 PM | 12:30 AM(next day) |
| 9:00 PM | 1:30 AM(next day) |
| 10:00 PM | 2:30 AM(next day) |
| 11:00 PM | 3:30 AM(next day) |
Daylight saving and how the gap changes
Around January the GMT → IST offset is 5h30m ahead of GMT. Around July it is 4h30m ahead of GMT. 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 GMT right now?
- IST is currently 4h30m ahead of GMT.
- What is the current GMT to IST time difference?
- Right now the gap is 4h30m ahead — IST is 4h30m ahead of GMT.
- Does the GMT → IST offset change during the year?
- Yes. Around January the offset is 5h30m ahead of GMT; around July it is 4h30m ahead of GMT. The converter above always reflects the correct offset for the date you pick.
- Does GMT observe daylight saving time?
- Yes — Greenwich Mean 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 GMT in IST?
- 9:00 AM GMT is 1:30 PM IST.
- What time is 12 PM (noon) GMT in IST?
- 12:00 PM GMT is 4:30 PM IST.
- What time is 5 PM GMT in IST?
- 5:00 PM GMT is 9:30 PM IST.
- When is the best time to schedule a call between GMT and IST?
- The working-hours overlap (09:00–17:00 in both zones) runs roughly 9:00 AM – 12:30 PM GMT (≈ 3.5 hours). Mid-morning GMT is usually the safest window for a live call.
- What time zone does GMT refer to?
- GMT refers to Greenwich Mean Time (IANA: Europe/London).
- What time zone does IST refer to?
- IST refers to India Standard Time (IANA: Asia/Kolkata).
- Is GMT on this page the same as other zones that share the letters "GMT"?
- On Clockjumper, GMT means Greenwich Mean Time. Disambiguation: equals UTC; UK winter time
- 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