Convert any time between CST and AWST, with a full 24-hour table and the hours when both sides are actually at work.

CST to AWST Time Converter

AWST is 13 hours ahead of CST. The US Central states are currently on CDT (UTC-5:00), and AWST is UTC+8:00.

Worth knowing right now. The US Central states are currently on CDT, not CST, because daylight saving is in effect. The 13 hours above is the gap between those two regions today, which is almost certainly what you want. Taken strictly as written, CST to AWST is 14 hours.
CST
Central Standard Time
12:00:35 PM
Sunday, October 11, 2026
UTC-5:00
+13:00
hours difference
⇆ Reverse
AWST
Australian Western Standard Time
01:00:35 AM
Monday, October 12, 2026
UTC+8:00

Best Time to Call Between CST and AWST

Standard 9-to-5 hours in these two zones never overlap, so someone has to take the call outside their working day. The most workable window is 6:00 PM to 10:00 PM CST, which is 7:00 AM to 11:00 AM AWST.

both at work CST only AWST only neither  —  hours along the strip are CST.

CST to AWST: Full 24-Hour Conversion Table

Shaded rows are working hours; the darker shade marks the hours when both zones are at work.

CSTAWSTWorking hours
12:00 AM 1:00 PM AWST only
1:00 AM 2:00 PM AWST only
2:00 AM 3:00 PM AWST only
3:00 AM 4:00 PM AWST only
4:00 AM 5:00 PM —
5:00 AM 6:00 PM —
6:00 AM 7:00 PM —
7:00 AM 8:00 PM —
8:00 AM 9:00 PM —
9:00 AM 10:00 PM CST only
10:00 AM 11:00 PM CST only
11:00 AM 12:00 AM next day CST only
12:00 PM 1:00 AM next day CST only
1:00 PM 2:00 AM next day CST only
2:00 PM 3:00 AM next day CST only
3:00 PM 4:00 AM next day CST only
4:00 PM 5:00 AM next day CST only
5:00 PM 6:00 AM next day —
6:00 PM 7:00 AM next day —
7:00 PM 8:00 AM next day —
8:00 PM 9:00 AM next day AWST only
9:00 PM 10:00 AM next day AWST only
10:00 PM 11:00 AM next day AWST only
11:00 PM 12:00 PM next day AWST only

What CST and AWST Actually Are

CST — Central Standard Time

Chicago, Houston, Dallas, Mexico City, Winnipeg. Standing at UTC-6:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to CST. CST also stands for China Standard Time (UTC+8) and Cuba Standard Time (UTC-5). This page covers the North American one.

Saskatchewan sits inside the Central zone but never changes its clocks, so it matches CST in winter and its neighbors' MDT in summer.

AWST — Australian Western Standard Time

Perth. Standing at UTC+8:00 as written, and the region does not change its clocks, so that offset holds all year. Western Australia does not observe daylight saving, so Perth stays on UTC+8 all year.

Western Australia has held four referendums on daylight saving and rejected it every time, most recently in 2009.

What This Means in Practice

The date changes mid-working-day

For 6 of the eight hours in a normal CST working day, the equivalent AWST time falls on a different calendar date. Anything scheduled in that stretch needs the date checked as well as the time, or a Tuesday call quietly becomes a Wednesday one at the other end.

This gap is not fixed

CST changes its clocks and AWST does not, so the difference between them moves by an hour twice a year. A recurring meeting set now will drift for one side from Sunday, November 1, 2026 unless someone resets it.

Nearly opposite sides of the clock

At 13 hours apart, one side's morning is the other side's night. Handing work over at the end of a shift usually beats trying to get both parties in the same call.

Frequently Asked Questions

What is the time difference between CST and AWST?

AWST is 13 hours ahead of CST. That is the live figure. Taken strictly as written, the gap between CST and AWST is 14 hours — the two differ because at least one of these regions is currently on daylight saving.

What is 9:00 AM CST in AWST?

9:00 AM CST is 10:00 PM AWST.

What are the best hours to schedule a call between CST and AWST?

Standard business hours in these two zones do not overlap at all, so one side has to work outside the 9-to-5. The most workable window is 6:00 PM to 10:00 PM CST, which is 7:00 AM to 11:00 AM AWST.

Does the difference between CST and AWST change during the year?

Yes. CST observes daylight saving and AWST does not, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.

Does CST always mean Central Standard Time?

CST also stands for China Standard Time (UTC+8) and Cuba Standard Time (UTC-5). This page covers the North American one.

Does AWST always mean Australian Western Standard Time?

Western Australia does not observe daylight saving, so Perth stays on UTC+8 all year.

Converting between two time zones regularly? Bookmark this page — the clocks update live and the table follows daylight saving automatically.