CST SydneyTime Converter
CST (UTC−6) is currently 16 hours behind Sydney (AEST, UTC+10). Compare live clocks, convert any hour, and find times to meet.
Best time to meet between CST and Sydney
Best meeting times:
CST: 5:00 PM – 6:00 PM
Sydney: 9:00 AM – 10:00 AM
Quick answer
When it's in CST, it's the next day in Sydney.
CST runs 16 hours behind Sydney (AEST/AEDT). Both sides keep standard office hours with a real 9–6 overlap: the highlighted window above works for everyone.
- Time difference
- +16h 00m
- CST
- UTC−6
- Sydney
- UTC+10
- Best call window
- 5:00 PM CST
CST to Sydney conversion table
The next 12 hours in CST and the matching local time in Sydney. The current hour is highlighted; drag the converter's slider and the table follows.
| CST | Sydney · AEST |
|---|---|
| NOW Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Daylight saving shifts this gap by up to 2 hours
The difference between CST and Sydney swings between 15, 16 and 17 hours across the year as each side starts or ends daylight saving. Regions on CST switch to CDT (UTC−5) during daylight saving time. Clocks in Sydney move forward 1 hour to AEDT (UTC+11) on Sunday, October 4, 2026. 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 CST
To Sydney
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 CST time in Sydney?", 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 time zone identifiers and every possible offset
- Live times in <time datetime> elements with explicit UTC offsets
{
"pair": "CST → Sydney",
"url": "https://worldclock.pro/en/convert/cst-to-sydney",
"from": {
"name": "CST",
"type": "timezone",
"abbreviation": "CST",
"daylightAbbreviation": "CDT",
"iana": "America/Chicago",
"standardUtcOffset": "-06:00",
"daylightUtcOffset": "-05:00",
"referenceCity": "Chicago"
},
"to": {
"name": "Sydney",
"type": "city",
"abbreviation": "AEST",
"daylightAbbreviation": "AEDT",
"iana": "Australia/Sydney",
"standardUtcOffset": "+10:00",
"daylightUtcOffset": "+11:00",
"referenceCity": "Sydney"
},
"currentDifferenceMinutes": 960,
"possibleDifferencesMinutes": [
900,
960,
1020
],
"note": "Between the regions that use these zones the difference is 15, 16 and 17 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 CST and Sydney?
CST is currently 16 hours behind Sydney. CST is on CST (UTC−6) and Sydney is on AEST (UTC+10). The difference can change when either side starts or ends daylight saving time.
Is Sydney ahead of or behind CST?
Sydney is currently 16 hours ahead of CST.
When it is 9:00 AM in CST, what time is it in Sydney?
When it is 9:00 AM on a Thursday in CST, it is 1:00 AM the next day in Sydney.
Do CST and Sydney observe daylight saving time?
Regions on CST switch to CDT (UTC−5) during daylight saving time. Clocks in Sydney move forward 1 hour to AEDT (UTC+11) on Sunday, October 4, 2026.
How do I convert CST time to Sydney time?
Add 16 hours to any time in CST to get the time in Sydney. This page's converter and 24-hour table do it automatically and stay correct through daylight-saving changes.
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