CDT SydneyTime Converter
CDT (UTC−5) is currently 15 hours behind Sydney (AEST, UTC+10). Compare live clocks, convert any hour, and find times to meet.
Quick answer
When it's in CDT, it's the next day in Sydney.
CDT runs 15 hours behind Sydney (AEST/AEDT). A 9-to-5 workday on one side lands in the other side's evening or night, so the two cities share almost no normal working hours — edge-of-day calls are the trick.
- Time difference
- +15h 00m
- CDT
- UTC−5
- Sydney
- UTC+10
- Best call window
- Outside 9–6
CDT to Sydney conversion table
The next 12 hours in CDT and the matching local time in Sydney. The current hour is highlighted; drag the converter's slider and the table follows.
| CDT | Sydney · AEST |
|---|---|
| NOW Mon, Jun 22 |
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 |
Best time to meet between CDT & Sydney
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 CDT and Sydney swings between 15, 16 and 17 hours across the year as each side starts or ends daylight saving. CDT is the daylight-saving counterpart of CST (UTC−6). 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 CDT
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 CDT 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 IANA zones and every possible offset
- Live times in <time datetime> elements with explicit UTC offsets
{
"pair": "CDT → Sydney",
"url": "https://worldclock.pro/en/convert/cdt-to-sydney",
"from": {
"name": "CDT",
"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": 900,
"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 CDT and Sydney?
CDT is currently 15 hours behind Sydney. CDT is on CDT (UTC−5) 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 CDT?
Sydney is currently 15 hours ahead of CDT.
When it is 9:00 AM in CDT, what time is it in Sydney?
When it is 9:00 AM on a Monday in CDT, it is 12:00 AM the next day in Sydney.
Do CDT and Sydney observe daylight saving time?
CDT is the daylight-saving counterpart of CST (UTC−6). Clocks in Sydney move forward 1 hour to AEDT (UTC+11) on Sunday, October 4, 2026.
How do I convert CDT time to Sydney time?
Add 15 hours to any time in CDT 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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