Sydney ChicagoAEST to CST Time Converter
Sydney (AEST, UTC+10) is currently 16 hours ahead of Chicago (CST, UTC−6). Compare live clocks, convert any hour, and find times to meet.
Quick answer
When it's in Sydney, it's the previous day in Chicago.
Sydney (AEST) runs 16 hours ahead of Chicago (CST). Both sides keep standard office hours with a real 9–6 overlap — the highlighted window below works for everyone.
- Time difference
- −16h 00m
- AEST
- UTC+10
- CST
- UTC−6
- Best call window
- 9:00 AM AEST
AEST to CST conversion table
The next 12 hours in AEST and the matching local time in CST. The current hour is highlighted; drag the converter's slider and the table follows.
| AEST | CST |
|---|---|
| NOW Mon, Jun 22 |
Mon, Jun 22 |
Tue, Jun 23 |
Mon, Jun 22 |
Tue, Jun 23 |
Mon, Jun 22 |
Tue, Jun 23 |
Mon, Jun 22 |
Tue, Jun 23 |
Mon, Jun 22 |
Tue, Jun 23 |
Mon, Jun 22 |
Tue, Jun 23 |
Mon, Jun 22 |
Tue, Jun 23 |
Mon, Jun 22 |
Tue, Jun 23 |
Mon, Jun 22 |
Tue, Jun 23 |
Mon, Jun 22 |
Tue, Jun 23 |
Mon, Jun 22 |
Tue, Jun 23 |
Mon, Jun 22 |
Best time to meet between AEST & CST
Working hours are 9am–6pm in each city. The bright band is where they overlap — when both sides are at their desks.
Daylight saving shifts this gap by up to 2 hours
The difference between AEST and CST swings between 17, 16 and 15 hours across the year as each side starts or ends daylight saving. Regions on AEST switch to AEDT (UTC+11) during daylight saving time. Regions on CST switch to CDT (UTC−5) during daylight saving time. This page always shows the live, DST-aware difference.
Related time zone conversions
Jump straight to another pair — every combination is a live tool, not an article.
From AEST
To CST
One source of truth — for you and your AI
This page exposes the same answer as structured data, so when you ask an assistant "what's 9am AEST time in CST?", it can cite the exact, DST-aware result — not a stale blog post.
- Schema.org JSON-LD on every converter page
- A machine-readable facts island with IANA zones and every possible offset
- Live times in <time datetime> elements with explicit UTC offsets
{
"pair": "AEST → CST",
"url": "https://worldclock.pro/en/convert/aest-to-cst",
"from": {
"name": "AEST",
"type": "timezone",
"abbreviation": "AEST",
"daylightAbbreviation": "AEDT",
"iana": "Australia/Sydney",
"standardUtcOffset": "+10:00",
"daylightUtcOffset": "+11:00",
"referenceCity": "Sydney"
},
"to": {
"name": "CST",
"type": "timezone",
"abbreviation": "CST",
"daylightAbbreviation": "CDT",
"iana": "America/Chicago",
"standardUtcOffset": "-06:00",
"daylightUtcOffset": "-05:00",
"referenceCity": "Chicago"
},
"currentDifferenceMinutes": -960,
"possibleDifferencesMinutes": [
-1020,
-960,
-900
],
"note": "Between the regions that use these zones the difference is 17, 16 and 15 hours across the year, depending on daylight saving on each side. The clocks on this page show the named zones themselves, which are fixed."
}
Frequently asked questions
What is the time difference between AEST and CST?
AEST is currently 16 hours ahead of CST. AEST is on AEST (UTC+10) and CST is on CST (UTC−6). The difference can change when either side starts or ends daylight saving time.
Is CST ahead of or behind AEST?
CST is currently 16 hours behind AEST.
When it is 9:00 AM in AEST, what time is it in CST?
When it is 9:00 AM on a Monday in AEST, it is 5:00 PM the previous day in CST.
Do AEST and CST observe daylight saving time?
Regions on AEST switch to AEDT (UTC+11) during daylight saving time. Regions on CST switch to CDT (UTC−5) during daylight saving time.
How do I convert AEST time to CST time?
Subtract 16 hours from any time in AEST to get the time in CST. This page's converter and 24-hour table do it automatically and stay correct through daylight-saving changes.
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