Timezone conversion
IST to CT Time — Convert India Standard Time to Central Time (US)
CT is currently 10h30m behind IST. The gap shifts across the year: around January it is 11h30m behind IST, and around July it is 10h30m behind IST, because one or both zones observe daylight saving.
CT is currently 10h30m behind IST.
IST • GMT+5:30 (UTC+5:30)
10:43 PM
Wednesday, Jul 8
CT • CDT (UTC-5)
12:13 PM
Wednesday, Jul 8
Abbreviation disambiguation
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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Full IST to CT conversion table
| IST | CT |
|---|---|
| 12:00 AM | 1:30 PM(previous day) |
| 1:00 AM | 2:30 PM(previous day) |
| 2:00 AM | 3:30 PM(previous day) |
| 3:00 AM | 4:30 PM(previous day) |
| 4:00 AM | 5:30 PM(previous day) |
| 5:00 AM | 6:30 PM(previous day) |
| 6:00 AM | 7:30 PM(previous day) |
| 7:00 AM | 8:30 PM(previous day) |
| 8:00 AM | 9:30 PM(previous day) |
| 9:00 AM | 10:30 PM(previous day) |
| 10:00 AM | 11:30 PM(previous day) |
| 11:00 AM | 12:30 AM |
| 12:00 PM | 1:30 AM |
| 1:00 PM | 2:30 AM |
| 2:00 PM | 3:30 AM |
| 3:00 PM | 4:30 AM |
| 4:00 PM | 5:30 AM |
| 5:00 PM | 6:30 AM |
| 6:00 PM | 7:30 AM |
| 7:00 PM | 8:30 AM |
| 8:00 PM | 9:30 AM |
| 9:00 PM | 10:30 AM |
| 10:00 PM | 11:30 AM |
| 11:00 PM | 12:30 PM |
Daylight saving and how the gap changes
Around January the IST → CT offset is 11h30m behind IST. Around July it is 10h30m behind IST. 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 CT ahead of or behind IST right now?
- CT is currently 10h30m behind IST.
- What is the current IST to CT time difference?
- Right now the gap is 10h30m behind — CT is 10h30m behind IST.
- Does the IST → CT offset change during the year?
- Yes. Around January the offset is 11h30m behind IST; around July it is 10h30m behind IST. The converter above always reflects the correct offset for the date you pick.
- Does IST observe daylight saving time?
- No — India Standard Time stays at a fixed UTC offset year-round.
- Does CT observe daylight saving time?
- Yes — Central Time (US) observes DST, so its UTC offset shifts by 1 hour(s) between winter and summer.
- What time is 9 AM IST in CT?
- 9:00 AM IST is 10:30 PM (previous day) CT.
- What time is 12 PM (noon) IST in CT?
- 12:00 PM IST is 1:30 AM CT.
- What time is 5 PM IST in CT?
- 5:00 PM IST is 6:30 AM CT.
- When is the best time to schedule a call between IST and CT?
- IST and CT 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 IST refer to?
- IST refers to India Standard Time (IANA: Asia/Kolkata).
- What time zone does CT refer to?
- CT refers to Central Time (US) (IANA: America/Chicago).
- 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