Clockjumper

Timezone conversion

AEST to CST Time — Convert Australian Eastern Standard Time to Central Standard Time (US)

CST is currently 15 hours behind AEST. The gap shifts across the year: around January CST is 17 hours behind AEST, and around July it is 15 hours behind AEST, because one or both zones observe daylight saving.

CST is currently 15 hours behind AEST.

AEST • AEST (UTC+10)
12:32 AM
Friday, Sep 11
CST • CDT (UTC-5)
9:32 AM
Thursday, Sep 10

Abbreviation disambiguation

On Clockjumper, AEST refers to Australian Eastern Standard Time, UTC+10 — the winter time in New South Wales, Victoria, Tasmania and the ACT. From the first Sunday in October to the first Sunday in April those states move to AEDT (UTC+11). Queensland stays on AEST all year and does not observe daylight saving.

On Clockjumper, CST refers to US Central Standard Time (UTC−6). The same three letters are also used for China Standard Time (UTC+8) and Cuba Standard Time (UTC−5) — check the city or UTC offset to be sure which is meant.

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Full AEST to CST conversion table

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

Daylight saving and how the gap changes

Around January CST is 17 hours behind AEST. Around July it is 15 hours behind AEST. That swing comes from one or both zones observing daylight saving on different schedules — the converter above always reflects the correct offset for the date you pick.

Frequently asked questions

Is CST ahead of or behind AEST right now?
CST is currently 15 hours behind AEST.
What is the current AEST to CST time difference?
Right now the gap is 15 hours — CST is 15 hours behind AEST.
Does the AEST → CST offset change during the year?
Yes. Around January CST is 17 hours behind AEST; around July it is 15 hours behind AEST. The converter above always reflects the correct offset for the date you pick.
Does AEST observe daylight saving time?
AEST is itself the daylight-saving form. Australian Eastern Standard Time is in force at UTC+10 through the summer months; outside that window the same zone is on AEDT (UTC+11).
Does CST observe daylight saving time?
CST is itself the standard-time form. Central Standard Time (US) is in force at UTC-6 through the winter months; outside that window the same zone is on CDT (UTC-5).
What time is 3 AM AEST in CST?
3:00 AM AEST is 12:00 PM (previous day) CST.
What time is 8 AM AEST in CST?
8:00 AM AEST is 5:00 PM (previous day) CST.
What time is 9 AM AEST in CST?
9:00 AM AEST is 6:00 PM (previous day) CST.
What time is 10 AM AEST in CST?
10:00 AM AEST is 7:00 PM (previous day) CST.
What time is 11 AM AEST in CST?
11:00 AM AEST is 8:00 PM (previous day) CST.
What time is 12 PM (noon) AEST in CST?
12:00 PM AEST is 9:00 PM (previous day) CST.
What time is 2 PM AEST in CST?
2:00 PM AEST is 11:00 PM (previous day) CST.
What time is 3 PM AEST in CST?
3:00 PM AEST is 12:00 AM CST.
What time is 4 PM AEST in CST?
4:00 PM AEST is 1:00 AM CST.
What time is 5 PM AEST in CST?
5:00 PM AEST is 2:00 AM CST.
What time is 9 PM AEST in CST?
9:00 PM AEST is 6:00 AM CST.
What time is 10 PM AEST in CST?
10:00 PM AEST is 7:00 AM CST.
When is the best time to schedule a call between AEST and CST?
AEST and CST have no direct 09:00–17:00 overlap on the same calendar day. Consider early-morning or late-evening slots on one side, or an asynchronous handoff.
What time zone does AEST refer to?
AEST refers to Australian Eastern Standard Time (IANA: Australia/Sydney).
What time zone does CST refer to?
CST refers to Central Standard Time (US) (IANA: America/Chicago).
Is AEST on this page the same as other zones that share the letters "AEST"?
On Clockjumper, AEST refers to Australian Eastern Standard Time, UTC+10 — the winter time in New South Wales, Victoria, Tasmania and the ACT. From the first Sunday in October to the first Sunday in April those states move to AEDT (UTC+11). Queensland stays on AEST all year and does not observe daylight saving.
Is CST on this page the same as other zones that share the letters "CST"?
On Clockjumper, CST refers to US Central Standard Time (UTC−6). The same three letters are also used for China Standard Time (UTC+8) and Cuba Standard Time (UTC−5) — check the city or UTC offset to be sure which is meant.

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