Timezone conversion
CST to IST Time — Convert Central Standard Time (US) to India Standard Time
IST is currently 10 hours and 30 minutes ahead of CST. The gap shifts across the year: around January IST is 11 hours and 30 minutes ahead of CST, and around July it is 10 hours and 30 minutes ahead of CST, because one or both zones observe daylight saving.
IST is currently 10 hours and 30 minutes ahead of CST.
Abbreviation disambiguation
On Clockjumper, CST refers to US Central Standard Time (UTC−6). The same three letters are also used for China Standard Time (UTC+8) and Cuba Standard Time (UTC−5) — check the city or UTC offset to be sure which is meant.
On Clockjumper, IST refers to India Standard Time (UTC+5:30). The same three letters are also used for Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1) — check the city or UTC offset to be sure which is meant.
Interactive converter
12:00PM
Select both cities to see the converted time.
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 IST is 11 hours and 30 minutes ahead of CST. Around July it is 10 hours and 30 minutes 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 10 hours and 30 minutes ahead of CST.
- What is the current CST to IST time difference?
- Right now the gap is 10 hours and 30 minutes — IST is 10 hours and 30 minutes ahead of CST.
- Does the CST → IST offset change during the year?
- Yes. Around January IST is 11 hours and 30 minutes ahead of CST; around July it is 10 hours and 30 minutes ahead of CST. The converter above always reflects the correct offset for the date you pick.
- Does CST observe daylight saving time?
- CST is itself the standard-time form. Central Standard Time (US) is in force at UTC-6 through the winter months; outside that window the same zone is on CDT (UTC-5).
- Does IST observe daylight saving time?
- No — India Standard Time stays at a fixed UTC offset year-round.
- What time is 3 AM CST in IST?
- 3:00 AM CST is 1:30 PM IST.
- What time is 8 AM CST in IST?
- 8:00 AM CST is 6:30 PM IST.
- What time is 9 AM CST in IST?
- 9:00 AM CST is 7:30 PM IST.
- What time is 10 AM CST in IST?
- 10:00 AM CST is 8:30 PM IST.
- What time is 11 AM CST in IST?
- 11:00 AM CST is 9:30 PM IST.
- What time is 12 PM (noon) CST in IST?
- 12:00 PM CST is 10:30 PM IST.
- What time is 2 PM CST in IST?
- 2:00 PM CST is 12:30 AM (next day) IST.
- What time is 3 PM CST in IST?
- 3:00 PM CST is 1:30 AM (next day) IST.
- What time is 4 PM CST in IST?
- 4:00 PM CST is 2:30 AM (next day) IST.
- What time is 5 PM CST in IST?
- 5:00 PM CST is 3:30 AM (next day) IST.
- What time is 9 PM CST in IST?
- 9:00 PM CST is 7:30 AM (next day) IST.
- What time is 10 PM CST in IST?
- 10:00 PM CST is 8:30 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 refers to US Central Standard Time (UTC−6). The same three letters are also used for China Standard Time (UTC+8) and Cuba Standard Time (UTC−5) — check the city or UTC offset to be sure which is meant.
- Is IST on this page the same as other zones that share the letters "IST"?
- On Clockjumper, IST refers to India Standard Time (UTC+5:30). The same three letters are also used for Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1) — check the city or UTC offset to be sure which is meant.