World Timezones

IST to CST Converter

Compare CST to IST instead

Search above to add a time zone or city

Offset

10.5 hours

India Standard Time (IST) is currently ahead of Central Time (CST).

IST: UTC+5:30

CST: 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.

Realistic options: hand off asynchronously, or stretch one side by an hour to catch the other team at the start or end of their day.

This window may shift by an hour during daylight saving time.

About these zones

India Standard Time is also known as IST.

Central Time is also known as CST, or CDT.

India Standard Time and Central Time are approximately 8,050 miles apart.

Quick reference

Full 24-hour conversion table.

ISTCSTDay
12:00 am1:30 pm-1 day
1:00 am2:30 pm-1 day
2:00 am3:30 pm-1 day
3:00 am4:30 pm-1 day
4:00 am5:30 pm-1 day
5:00 am6:30 pm-1 day
6:00 am7:30 pm-1 day
7:00 am8:30 pm-1 day
8:00 am9:30 pm-1 day
9:00 am10:30 pm-1 day
10:00 am11:30 pm-1 day
11:00 am12:30 amSame day
12:00 pm1:30 amSame day
1:00 pm2:30 amSame day
2:00 pm3:30 amSame day
3:00 pm4:30 amSame day
4:00 pm5:30 amSame day
5:00 pm6:30 amSame day
6:00 pm7:30 amSame day
7:00 pm8:30 amSame day
8:00 pm9:30 amSame day
9:00 pm10:30 amSame day
10:00 pm11:30 amSame day
11:00 pm12:30 pmSame 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.

Daylight today

India Standard Time
Sunrise
6:02 AM
Sunset
7:11 PM
Day length
13h 9m
Central Time
Sunrise
5:22 AM
Sunset
8:16 PM
Day length
14h 54m

Daylight overlap: 3h 20m — 3:52 PM–7:11 PM in India Standard Time (5:22 AM–8:41 AM in Central Time). Both locations are in daylight during this window.

Cities in these zones

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