Offset
The time difference between India Standard Time and Central Time is 10.5 hours.
India Standard Time (IST) is ahead of Central Time (CDT).
IST: UTC+5:30
CDT: UTC-5
Central Time is currently observing daylight saving time; India Standard Time is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in India Standard Time and Central Time don't overlap on the same weekday. Central Time is 10 hours behind India Standard Time.
With some flexibility, there’s a workable window outside standard hours:
- 6 PM–8 PM in India Standard Time (7 AM–9 AM in Central Time) — suggest 7:00 PM India Standard Time (8:30 AM Central Time).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
India Standard Time is also known as IST. To call India, dial +91.
Central Time is also known as CST, or CDT. To call United States, dial +1.
Central Time is approximately 8,050 miles north of India Standard Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| IST | CST | Day |
|---|---|---|
| 12:00 am | 1:30 pm | -1 day |
| 1:00 am | 2:30 pm | -1 day |
| 2:00 am | 3:30 pm | -1 day |
| 3:00 am | 4:30 pm | -1 day |
| 4:00 am | 5:30 pm | -1 day |
| 5:00 am | 6:30 pm | -1 day |
| 6:00 am | 7:30 pm | -1 day |
| 7:00 am | 8:30 pm | -1 day |
| 8:00 am | 9:30 pm | -1 day |
| 9:00 am | 10:30 pm | -1 day |
| 10:00 am | 11:30 pm | -1 day |
| 11:00 am | 12:30 am | Same day |
| 12:00 pm | 1:30 am | Same day |
| 1:00 pm | 2:30 am | Same day |
| 2:00 pm | 3:30 am | Same day |
| 3:00 pm | 4:30 am | Same day |
| 4:00 pm | 5:30 am | Same day |
| 5:00 pm | 6:30 am | Same day |
| 6:00 pm | 7:30 am | Same day |
| 7:00 pm | 8:30 am | Same day |
| 8:00 pm | 9:30 am | Same day |
| 9:00 pm | 10:30 am | Same day |
| 10:00 pm | 11:30 am | Same day |
| 11:00 pm | 12:30 pm | Same day |
Daylight saving time
Central Time observes daylight saving time; India Standard Time does not. The offset between the two zones changes when Central Time transitions: on Sunday, November 1, 2026, clocks fall back from CDT to CST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 6:12 AM
- Sunset
- 7:19 PM
- Day length
- 13h 7m
- Sunrise
- 5:34 AM
- Sunset
- 8:21 PM
- Day length
- 14h 46m
Daylight overlap: 38m — 6:12 AM–6:51 AM in India Standard Time (7:42 PM–8:21 PM in Central Time). Both locations are in daylight during this window.
Cities in these zones
Cities in India Standard Time
Cities in Central Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in India Standard Time
- BOM
- NMI
- DEL
- BLR
- HYD
- AMD
- MAA
- CCU
- STV
- PNQ
Airports in Central Time
- GYY
- MDW
- ORD
- HOU
- IAH
- SAT
- DAL
- DFW
- AUS
- BNA
Related conversions
Common conversions
- What is 9:00 am IST in CST?
- 9:00 am IST is 10:30 pm CST, the previous day.
- What is 12:00 pm IST in CST?
- 12:00 pm IST is 1:30 am CST.
- What is 12:30 pm IST in CST?
- 12:30 pm IST is 2:00 am CST.
- What is 2:00 pm IST in CST?
- 2:00 pm IST is 3:30 am CST.
- What is 5:00 pm IST in CST?
- 5:00 pm IST is 6:30 am CST.
- What is 11:30 pm IST in CST?
- 11:30 pm IST is 1:00 pm CST.