World Timezones

CST to IST Converter

Compare IST to CST instead
Central Time6:29 amMon, Jul 20
Central TimeCDT
North America · UTC-5
6:29 amMon, Jul 20
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
India Standard TimeIST
Asia · UTC+5:30
4:59 pmMon, Jul 20
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a

Offset

The time difference between Central Time and India Standard Time is 10.5 hours.

10.5 hours

Central Time (CDT) is behind India Standard Time (IST).

CDT: UTC-5

IST: UTC+5:30

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 Central Time and India Standard Time don't overlap on the same weekday. India Standard Time is 11 hours ahead of Central Time.

With some flexibility, there’s a workable window outside standard hours:

  • 7 AM–10 AM in Central Time (5 PM–8 PM in India Standard Time) — suggest 8:00 AM Central Time (6:30 PM India Standard 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

Central Time is also known as CST, or CDT. To call United States, dial +1.

India Standard Time is also known as IST. To call India, dial +91.

India Standard Time is approximately 8,050 miles north of Central Time.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

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

Central Time
Sunrise
5:33 AM
Sunset
8:22 PM
Day length
14h 48m
India Standard Time
Sunrise
6:12 AM
Sunset
7:19 PM
Day length
13h 8m

Daylight overlap: 3h 16m — 5:33 AM–8:49 AM in Central Time (4:03 PM–7:19 PM in India Standard Time). Both locations are in daylight during this window.

Cities in these zones

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Central Time

  • GYY
  • MDW
  • ORD
  • HOU
  • IAH
  • SAT
  • DAL
  • DFW
  • AUS
  • BNA

Airports in India Standard Time

  • BOM
  • NMI
  • DEL
  • BLR
  • HYD
  • AMD
  • MAA
  • CCU
  • STV
  • PNQ

Related conversions

Common conversions

What is 9:00 am CST in IST?
9:00 am CST is 7:30 pm IST.
What is 12:00 pm CST in IST?
12:00 pm CST is 10:30 pm IST.
What is 12:30 pm CST in IST?
12:30 pm CST is 11:00 pm IST.
What is 2:00 pm CST in IST?
2:00 pm CST is 12:30 am IST, the next day.
What is 5:00 pm CST in IST?
5:00 pm CST is 3:30 am IST, the next day.
What is 11:30 pm CST in IST?
11:30 pm CST is 10:00 am IST, the next day.