COT SydneyTime Converter
COT (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 COT, it's the next day in Sydney.
COT 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
- COT
- UTC−5
- Sydney
- UTC+10
- Best call window
- Outside 9–6
COT to Sydney conversion table
The next 12 hours in COT and the matching local time in Sydney. The current hour is highlighted; drag the converter's slider and the table follows.
| COT | 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 COT & 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 1 hour
The difference between COT and Sydney swings between 15 and 16 hours across the year as each side starts or ends daylight saving. 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 COT
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 COT 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": "COT → Sydney",
"url": "https://worldclock.pro/en/convert/cot-to-sydney",
"from": {
"name": "COT",
"type": "timezone",
"abbreviation": "COT",
"daylightAbbreviation": null,
"iana": "America/Bogota",
"standardUtcOffset": "-05:00",
"daylightUtcOffset": null,
"referenceCity": "Bogotá"
},
"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
],
"note": "Between the regions that use these zones the difference is 15 and 16 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 COT and Sydney?
COT is currently 15 hours behind Sydney. COT is on COT (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 COT?
Sydney is currently 15 hours ahead of COT.
When it is 9:00 AM in COT, what time is it in Sydney?
When it is 9:00 AM on a Monday in COT, it is 12:00 AM the next day in Sydney.
Do COT and Sydney observe daylight saving time?
COT does not observe daylight saving time. Clocks in Sydney move forward 1 hour to AEDT (UTC+11) on Sunday, October 4, 2026.
How do I convert COT time to Sydney time?
Add 15 hours to any time in COT to get the time in Sydney. This page's converter and 24-hour table do it automatically and stay correct through daylight-saving changes.
More world clock & time zone apps
From the team behind worldclock.pro — global scheduling on iPhone & iPad, a Mac menu-bar clock, and precision Zulu/UTC for aviation, military, and HAM radio.
World Clock Master
Global time zone scheduling for international teams, travelers, and professionals who coordinate across cities and continents.
View app
World Clock Pro
The same powerful time zone converter, meeting scheduler, and world clock — living in your Mac's menu bar.
View app