ACST/ACDT to CST/CDT time converter

CST/CDT is 15 hours 30 minutes behind ACST/ACDT. When it is 9:00 AM in ACST/ACDT, it is 5:30 PM (Fri, Oct 16) in CST/CDT.

ACST/ACDT ACDT

Saturday, October 17, 2026

CST/CDT CDT

Friday, October 16, 2026

ACST/ACDT
Australian Central Daylight Time
Sat, Oct 17
ACDTUTC+10:30
CST/CDT
Central Standard Time
Fri, Oct 16
CDTUTC-5-15h 30m
Finding your time zone…
Shared working hours (9:00–18:00)

ACST/ACDT to CST/CDT conversion table

Every hour of today in ACST/ACDT and the matching time in CST/CDT. Light rows are typical working hours (9:00–18:00).

ACST/ACDTCST/CDT
12:00 AM8:30 AM−1 day
1:00 AM9:30 AM−1 day
2:00 AM10:30 AM−1 day
3:00 AM11:30 AM−1 day
4:00 AM12:30 PM−1 day
5:00 AM1:30 PM−1 day
6:00 AM2:30 PM−1 day
7:00 AM3:30 PM−1 day
8:00 AM4:30 PM−1 day
9:00 AM5:30 PM−1 day
10:00 AM6:30 PM−1 day
11:00 AM7:30 PM−1 day
12:00 PM8:30 PM−1 day
1:00 PM9:30 PM−1 day
2:00 PM10:30 PM−1 day
3:00 PM11:30 PM−1 day
4:00 PM12:30 AM
5:00 PM1:30 AM
6:00 PM2:30 AM
7:00 PM3:30 AM
8:00 PM4:30 AM
9:00 PM5:30 AM
10:00 PM6:30 AM
11:00 PM7:30 AM

Best time to call or meet

Working hours don't overlap fully. The closest fit is 7:00 AM – 1:30 PM in ACST/ACDT (3:30 PM – 10:00 PM in CST/CDT): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because ACST/ACDT and CST/CDT switch clocks on different dates:

  • Oct 17, 2026 – Nov 1, 2026: -15h 30m
  • Nov 1, 2026 – Mar 14, 2027: -16h 30m
  • Mar 14, 2027 – Apr 4, 2027: -15h 30m
  • Apr 4, 2027 – Oct 3, 2027: -14h 30m
  • Oct 3, 2027 – Oct 17, 2027: -15h 30m

More conversions

CST to ACDTACDT to UTCACDT to GMTACDT to ESTACDT to MSTACDT to PSTACDT to CETACDT to MSKACDT to GSTACDT to PKTACDT to ISTACDT to SGTACDT to PHT
UTC to CSTGMT to CSTEST to CSTMST to CSTPST to CSTCET to CSTMSK to CSTGST to CSTPKT to CSTIST to CSTSGT to CSTPHT to CST

Questions and answers

What is the time difference between ACST/ACDT and CST/CDT?

CST/CDT is 15 hours 30 minutes behind ACST/ACDT.

What time is it in CST/CDT when it is 9 AM in ACST/ACDT?

When it is 9:00 AM in ACST/ACDT, it is 5:30 PM (Fri, Oct 16) in CST/CDT.

When is the best time to call CST/CDT from ACST/ACDT?

Working hours don't overlap fully. The closest fit is 7:00 AM – 1:30 PM in ACST/ACDT (3:30 PM – 10:00 PM in CST/CDT): working hours on one side, early or late on the other.

Does the time difference between ACST/ACDT and CST/CDT change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.