CST to AST/ADT time converter

AST/ADT is 11 hours behind CST. When it is 9:00 AM in CST, it is 10:00 PM (Fri, Oct 16) in AST/ADT.

CST UTC+8

Saturday, October 17, 2026

AST/ADT ADT

Friday, October 16, 2026

CST
China Standard Time
Sat, Oct 17
UTC+8
AST/ADT
Atlantic Standard Time
Fri, Oct 16
ADTUTC-3-11h
Finding your time zone…
Shared working hours (9:00–18:00)

CST to AST/ADT conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 8:00 PM – 10:00 PM in CST (9:00 AM – 11:00 AM in AST/ADT): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because CST and AST/ADT switch clocks on different dates:

  • Oct 17, 2026 – Nov 1, 2026: -11h
  • Nov 1, 2026 – Mar 14, 2027: -12h
  • Mar 14, 2027 – Oct 17, 2027: -11h

More conversions

AST to CST (China)CST (China) to UTCCST (China) to GMTCST (China) to ESTCST (China) to CSTCST (China) to MSTCST (China) to PSTCST (China) to CETCST (China) to MSKCST (China) to GSTCST (China) to PKTCST (China) to ISTCST (China) to SGT
UTC to ASTGMT to ASTEST to ASTCST to ASTMST to ASTPST to ASTCET to ASTMSK to ASTGST to ASTPKT to ASTIST to ASTSGT to AST

Questions and answers

What is the time difference between CST and AST/ADT?

AST/ADT is 11 hours behind CST.

What time is it in AST/ADT when it is 9 AM in CST?

When it is 9:00 AM in CST, it is 10:00 PM (Fri, Oct 16) in AST/ADT.

When is the best time to call AST/ADT from CST?

Working hours don't overlap fully. The closest fit is 8:00 PM – 10:00 PM in CST (9:00 AM – 11:00 AM in AST/ADT): working hours on one side, early or late on the other.

Does the time difference between CST and AST/ADT change?

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