AEDT to COT
-16hAEDT
AEDTSOURCECOT
COTGreen rows indicate typical business hours (9 AM - 5 PM)
AEDT and COT on the World Map
The map below highlights the AEDT (Australian Eastern Daylight Time) and COT (Colombia Time) timezone regions across the globe.
AEDT – Australian Eastern Daylight Time
UTC+11:00Australian Eastern Daylight Time (AEDT, UTC+11:00) is the daylight saving period in south-eastern Australia, from October to April.
- •AEDT runs from the first Sunday in October to the first Sunday in April.
- •AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
- •Queensland does not observe daylight saving, so Brisbane stays on AEST.
- •During AEDT, Sydney is 16 hours ahead of New York and 11 hours ahead of UTC.
COT – Colombia Time
UTC-05:00Colombia Time (COT) is the standard time for Colombia, 5 hours behind UTC.
- •Colombia does not observe daylight saving time.
- •COT is the same offset as EST (UTC-05:00).
- •Bogotá sits at 2,640m elevation, making it one of the highest capital cities.
Understanding the -16h Gap: AEDT vs COT
AEDT runs on Australian Eastern Daylight Time (AEDT) at UTC+11:00. COT runs on Colombia Time (COT) at UTC-05:00. That puts AEDT 16 hours behind COT — a difference of -16h at the current offsets.
In practice, when it is 9:00 AM in AEDT it is 5:00 PM in COT on the previous day. Midnight in AEDT is 8:00 AM in COT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
AEDT to COT time conversion table
| AEDT (AEDT) | COT (COT) | Day |
|---|---|---|
| 12:00 AM | 8:00 AM | previous day |
| 6:00 AM | 2:00 PM | previous day |
| 7:00 AM | 3:00 PM | previous day |
| 8:00 AM | 4:00 PM | previous day |
| 9:00 AM | 5:00 PM | previous day |
| 12:00 PM | 8:00 PM | previous day |
| 3:00 PM | 11:00 PM | previous day |
| 5:00 PM | 1:00 AM | same day |
| 6:00 PM | 2:00 AM | same day |
| 9:00 PM | 5:00 AM | same day |
Why people convert AEDT to COT time
- Scheduling a call from AEDT to COT: a 10:00 AM start in AEDT lands at 6:00 PM in COT the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -16h gap: AEDT and COT have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in COT is 5:00 PM in AEDT.
- Keeping family and friends in sync: knowing that 8:00 PM in AEDT is 4:00 AM in COT makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM AEDT" is unambiguous; "3 PM" across a -16h gap is not.
- With a -16h gap there is no shared 9-to-5 window, so alternate the early start: one week AEDT takes the early slot, the next week COT does.
About AEDT (Australian Eastern Daylight Time)
Australian Eastern Daylight Time (AEDT) is the daylight saving period in south-eastern Australia, one hour ahead of Australian Eastern Standard Time (AEST, UTC+10:00). Because Australia is in the southern hemisphere, AEDT runs through the summer — from the first Sunday in October to the first Sunday in April — which is almost exactly the reverse of the European and North American schedules. New South Wales, Victoria, Tasmania and the Australian Capital Territory observe it; Queensland and the Northern Territory do not, so Brisbane stays on AEST year round while Sydney moves to AEDT. During AEDT, Sydney is 11 hours ahead of UTC and 16 hours ahead of New York.
About COT (Colombia Time)
Colombia Time (COT) is used throughout Colombia. Colombia does not observe daylight saving time. COT shares the same offset as EST (UTC-05:00). Bogotá, the capital, is one of the largest cities in South America.
Best time to call between AEDT and COT
With a -16h offset there is no overlap inside a normal 9 AM – 5 PM day. COT opens at 9:00 AM COT, which is 5:00 PM in AEDT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
AEDT and COT have no shared working hours because of the -16h gap. Teams need to alternate early starts or rely on asynchronous handovers.
AEDT is 16 hours behind COT (AEDT UTC+11:00 → COT UTC-05:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
AEDT
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 2026
COT
Does not observe DST
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between AEDT and COT?
AEDT (AEDT, UTC+11:00) is 16 hours behind COT (COT, UTC-05:00). The gap is currently -16h.
How do I convert AEDT time to COT time?
Add -16h to AEDT local time. For example, 9:00 AM in AEDT is 5:00 PM in COT (previous day).
What time is it in COT right now?
COT uses COT at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -16h offset from AEDT.
What is the best time to call COT from AEDT?
There is no shared working-hours window because of the -16h gap. The closest option is 1:00 PM in AEDT, which is 9:00 PM in COT.
Which is behind, AEDT or COT?
AEDT is 16 hours behind COT. When it is 12:00 PM in AEDT it is 8:00 PM in COT.
Does daylight saving time affect the AEDT–COT difference?
Neither zone observes daylight saving time, so the -16h offset between AEDT and COT is fixed all year.
Which other cities share AEDT's time zone?
AEDT also covers Sydney, Melbourne, Canberra, Hobart, Newcastle.
Which countries use AEDT, AEDT's zone?
AEDT is used in Australia (NSW, Victoria, Tasmania, ACT).
Is there a day difference between AEDT and COT?
Sometimes. The -16h gap is large enough that 8:00 PM or later in AEDT already falls on the in COT.
What is the time difference between AEDT and COT?
COT is -16h from AEDT.
What timezone is AEDT in?
AEDT operates on its local timezone.
What timezone is COT in?
COT operates on its local timezone.
Which countries use AEDT (Australian Eastern Daylight Time)?
AEDT is used in Australia (NSW, Victoria, Tasmania, ACT).
Does AEDT observe daylight saving time?
Yes, AEDT switches to AEDT during summer months.
What are some interesting facts about AEDT?
AEDT runs from the first Sunday in October to the first Sunday in April. AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
Which cities are in the COT timezone?
Major cities in the COT timezone include Bogotá, Medellín, Cali, Barranquilla, Cartagena.
What is the UTC offset for COT?
Colombia Time (COT) is at UTC-05:00.
What should I know about the COT timezone?
Colombia does not observe daylight saving time. COT is the same offset as EST (UTC-05:00).
When is it midnight in AEDT, what time is it in COT?
When it is 12:00 AM (midnight) in AEDT (AEDT), it is -16h later in COT (COT).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More AEDT time conversions
- aedt to sydney
- aedt to aest
- aedt to new york
- aedt to london
- aedt to dubai
- aedt to tokyo
- aedt to singapore
- aedt to los angeles
- aedt to paris
- aedt to delhi
- aedt to mumbai
- aedt to berlin
- aedt to hong kong
- aedt to toronto
- aedt to kathmandu
- new york to aedt
- london to aedt
- dubai to aedt
- tokyo to aedt
- singapore to aedt
- sydney to aedt
- los angeles to aedt
- paris to aedt
- delhi to aedt
- mumbai to aedt
- berlin to aedt
- hong kong to aedt
- toronto to aedt
- kathmandu to aedt
See every conversion from AEDT →·See every conversion from COT →