Timezone conversion
CST to IST Time — Convert Central Standard Time (US) to India Standard Time
IST is currently 10h30m ahead of CST. The gap shifts across the year: around January it is 11h30m ahead of CST, and around July it is 10h30m ahead of CST, because one or both zones observe daylight saving.
IST is currently 10h30m ahead of CST.
Abbreviation disambiguation
CST here means Central Standard Time (US). Note: collides: China Standard Time, Cuba Standard 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 CST to IST conversion table
| CST | IST |
|---|---|
| 12:00 AM | 10:30 AM |
| 1:00 AM | 11:30 AM |
| 2:00 AM | 12:30 PM |
| 3:00 AM | 1:30 PM |
| 4:00 AM | 2:30 PM |
| 5:00 AM | 3:30 PM |
| 6:00 AM | 4:30 PM |
| 7:00 AM | 5:30 PM |
| 8:00 AM | 6:30 PM |
| 9:00 AM | 7:30 PM |
| 10:00 AM | 8:30 PM |
| 11:00 AM | 9:30 PM |
| 12:00 PM | 10:30 PM |
| 1:00 PM | 11:30 PM |
| 2:00 PM | 12:30 AM(next day) |
| 3:00 PM | 1:30 AM(next day) |
| 4:00 PM | 2:30 AM(next day) |
| 5:00 PM | 3:30 AM(next day) |
| 6:00 PM | 4:30 AM(next day) |
| 7:00 PM | 5:30 AM(next day) |
| 8:00 PM | 6:30 AM(next day) |
| 9:00 PM | 7:30 AM(next day) |
| 10:00 PM | 8:30 AM(next day) |
| 11:00 PM | 9:30 AM(next day) |
Daylight saving and how the gap changes
Around January the CST → IST offset is 11h30m ahead of CST. Around July it is 10h30m ahead of CST. 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 CST right now?
- IST is currently 10h30m ahead of CST.
- What is the current CST to IST time difference?
- Right now the gap is 10h30m ahead — IST is 10h30m ahead of CST.
- Does the CST → IST offset change during the year?
- Yes. Around January the offset is 11h30m ahead of CST; around July it is 10h30m ahead of CST. The converter above always reflects the correct offset for the date you pick.
- Does CST observe daylight saving time?
- Yes — Central Standard Time (US) 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 CST in IST?
- 9:00 AM CST is 7:30 PM IST.
- What time is 12 PM (noon) CST in IST?
- 12:00 PM CST is 10:30 PM IST.
- What time is 5 PM CST in IST?
- 5:00 PM CST is 3:30 AM (next day) IST.
- When is the best time to schedule a call between CST and IST?
- CST 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 CST refer to?
- CST refers to Central Standard Time (US) (IANA: America/Chicago).
- What time zone does IST refer to?
- IST refers to India Standard Time (IANA: Asia/Kolkata).
- Is CST on this page the same as other zones that share the letters "CST"?
- On Clockjumper, CST means Central Standard Time (US). Disambiguation: collides: China Standard Time, Cuba Standard 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