GST to ACST/ACDT time converter

ACST/ACDT is 5 hours 30 minutes ahead of GST. When it is 9:00 AM in GST, it is 2:30 PM in ACST/ACDT.

GST UTC+4

Friday, October 16, 2026

ACST/ACDT ACST

Saturday, October 17, 2026

GST
Gulf Standard Time
Fri, Oct 16
UTC+4
ACST/ACDT
Australian Central Standard Time
Sat, Oct 17
ACSTUTC+9:30+5h 30m
Finding your time zone…
Shared working hours (9:00–18:00)

GST to ACST/ACDT conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 12:30 PM in GST (2:30 PM – 6:00 PM in ACST/ACDT).

Daylight saving time and the difference

The difference stays 5 hours 30 minutes all year.

More conversions

ACST to GSTGST to UTCGST to GMTGST to ESTGST to CSTGST to MSTGST to PSTGST to CETGST to MSKGST to PKTGST to ISTGST to SGTGST to PHT
UTC to ACSTGMT to ACSTEST to ACSTCST to ACSTMST to ACSTPST to ACSTCET to ACSTMSK to ACSTPKT to ACSTIST to ACSTSGT to ACSTPHT to ACST

Questions and answers

What is the time difference between GST and ACST/ACDT?

ACST/ACDT is 5 hours 30 minutes ahead of GST.

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

When it is 9:00 AM in GST, it is 2:30 PM in ACST/ACDT.

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

Both sides are at work from 9:00 AM – 12:30 PM in GST (2:30 PM – 6:00 PM in ACST/ACDT).

Does the time difference between GST and ACST/ACDT change?

No. The difference stays 5 hours 30 minutes all year.