Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

COT to EDT

+1h

COT

COTSOURCE

UTC-05:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

EDT

UTC-04:00☀ DST active

HH01

MM00

13:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

COT

EDT

12:00 AM

1:00 AM

2:00 AM

3:00 AM

4:00 AM

5:00 AM

6:00 AM

7:00 AM

8:00 AM

9:00 AM

10:00 AM

11:00 AM

12:00 PM

1:00 PM

2:00 PM

3:00 PM

4:00 PM

5:00 PM

6:00 PM

7:00 PM

8:00 PM

9:00 PM

10:00 PM

11:00 PM

Green rows indicate typical business hours (9 AM - 5 PM)

COT and EDT on the World Map

The map below highlights the COT (Colombia Time) and EDT (Eastern Daylight Time) timezone regions across the globe.

COT Zone

→

EDT Zone

Explore all world timezones interactively →

COT – Colombia Time

UTC-05:00

Colombia Time (COT) is the standard time for Colombia, 5 hours behind UTC.

Countries in COT

Colombia

Major Cities in COT

BogotáMedellínCaliBarranquillaCartagena

Key Facts about COT

•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.

Daylight Saving:No – UTC-05:00 year-round

Learn more about COT on Wikipedia

EDT – Eastern Daylight Time

UTC-04:00

Eastern Daylight Time (EDT) is the daylight saving time observed in the Eastern Time Zone, 4 hours behind UTC.

Countries in EDT

United States (Eastern)Canada (Ontario, Quebec)BahamasHaitiTurks and Caicos

Major Cities in EDT

New York CityWashington D.C.TorontoMiamiPhiladelphiaAtlantaBostonMontreal

Key Facts about EDT

•EDT is observed from the second Sunday of March to the first Sunday of November.
•During EDT, the US East Coast is only 4 hours behind London (instead of 5).
•Not all EST locations switch to EDT – Panama and Jamaica stay on EST year-round.

Daylight Saving:Yes – switches to EST

Learn more about EDT on Wikipedia

Everything You Need to Know About COT and EDT Time

COT runs on Colombia Time (COT) at UTC-05:00. EDT runs on Eastern Daylight Time (EDT) at UTC-04:00. That puts COT 1 hour ahead of EDT — a difference of +1h at the current offsets.

In practice, when it is 9:00 AM in COT it is 10:00 AM in EDT. Midnight in COT is 1:00 AM in EDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

COT to EDT time conversion table

COT (COT)	EDT (EDT)	Day
12:00 AM	1:00 AM	same day
6:00 AM	7:00 AM	same day
7:00 AM	8:00 AM	same day
8:00 AM	9:00 AM	same day
9:00 AM	10:00 AM	same day
12:00 PM	1:00 PM	same day
3:00 PM	4:00 PM	same day
5:00 PM	6:00 PM	same day
6:00 PM	7:00 PM	same day
9:00 PM	10:00 PM	same day

Why people convert COT to EDT time

Scheduling a call from COT to EDT: a 10:00 AM start in COT lands at 11:00 AM in EDT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both COT and EDT are inside the 9-to-5 working day between 9:00 AM and 4:00 PM COT time (10:00 AM–5:00 PM EDT). That is roughly 7 hours of usable overlap.
Watching a live event or market open: COT viewers need 10:00 AM in EDT to catch a 9:00 AM start there, and 11:00 PM if the event is anchored to COT.

Always state the zone abbreviation, not just the hour. "3:00 PM COT" is unambiguous; "3 PM" across a +1h gap is not.
Block 9:00 AM–4:00 PM COT as the recurring meeting window if you work primarily from COT and need EDT colleagues present.

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.

About EDT (Eastern Daylight Time)

Eastern Daylight Time (EDT) is used during the summer months (second Sunday of March to the first Sunday of November) in the Eastern Time Zone. During EDT, clocks are advanced by one hour to take advantage of longer daylight hours. Not all locations in the Eastern Time Zone observe DST – Panama, Jamaica, and most of the Caribbean remain on EST year-round.

Best time to call between COT and EDT

Both COT and EDT sit inside the 9 AM – 5 PM working day between 9:00 AM–4:00 PM COT, which is 10:00 AM–5:00 PM EDT. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

COT and EDT share 7 hours of working-hours overlap (9:00 AM–4:00 PM COT), so scheduling a live meeting is straightforward.

COT is 1 hour ahead of EDT (COT UTC-05:00 → EDT UTC-04:00). The shared working window is 9:00 AM–4:00 PM COT. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

COT

Does not observe DST

EDT

☀ Currently in DST

Standard: UTC-05:00 · DST: UTC-04:00

Clocks fall back on Sun, Nov 1, 2026

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between COT and EDT?

COT (COT, UTC-05:00) is 1 hour ahead of EDT (EDT, UTC-04:00). The gap is currently +1h.

How do I convert COT time to EDT time?

Add +1h to COT local time. For example, 9:00 AM in COT is 10:00 AM in EDT.

What time is it in EDT right now?

EDT uses EDT at UTC-04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +1h offset from COT.

What is the best time to call EDT from COT?

Call between 9:00 AM and 4:00 PM COT — that maps to 10:00 AM–5:00 PM EDT and keeps both parties inside the working day.

Which is ahead, COT or EDT?

COT is 1 hour ahead of EDT. When it is 12:00 PM in COT it is 1:00 PM in EDT.

Does daylight saving time affect the COT–EDT difference?

Neither zone observes daylight saving time, so the +1h offset between COT and EDT is fixed all year.

Which other cities share COT's time zone?

COT also covers Bogotá, Medellín, Cali, Barranquilla, Cartagena.

Which countries use COT, COT's zone?

COT is used in Colombia.

Is there a day difference between COT and EDT?

Not normally. The +1h gap only pushes the date over for late-evening times.

What is the time difference between COT and EDT?

EDT is +1h from COT.

What timezone is COT in?

COT operates on its local timezone.

What timezone is EDT in?

EDT operates on its local timezone.

Which countries use COT (Colombia Time)?

COT is used in Colombia.

Does COT observe daylight saving time?

No, COT does not observe daylight saving time and remains at UTC-05:00 year-round.

What are some interesting facts about COT?

Colombia does not observe daylight saving time. COT is the same offset as EST (UTC-05:00).

Which cities are in the EDT timezone?

Major cities in the EDT timezone include New York City, Washington D.C., Toronto, Miami, Philadelphia, Atlanta, Boston, Montreal.

What is the UTC offset for EDT?

Eastern Daylight Time (EDT) is at UTC-04:00. During daylight saving time, it shifts to EST.

What should I know about the EDT timezone?

EDT is observed from the second Sunday of March to the first Sunday of November. During EDT, the US East Coast is only 4 hours behind London (instead of 5).