Colombia Time to Canada Atlantic Time
Convert times between Colombia Time (COT, UTC-5:00) and Canada Atlantic Time (AST, UTC-4:00). Canada Atlantic Time is 1 hour ahead of Colombia Time in standard time. During daylight saving time this difference changes to 2 hours.
UTC-5:00→UTC-4:00 / -3:00
Live timezone converterUTC Offset Reference
| Timezone | Abbreviation | Standard offset | DST offset | Country |
|---|---|---|---|---|
| Colombia Time | COT | UTC-5:00 | — | Colombia |
| Canada Atlantic Time | AST / ADT | UTC-4:00 | UTC-3:00 | Canada |
* DST offset applies during summer months. Exact transition dates vary by year.
Standard Time Conversion (COT → AST)
| Colombia Time | Canada Atlantic Time |
|---|---|
| 12:00 AM COT | 1:00 AM AST |
| 6:00 AM COT | 7:00 AM AST |
| 9:00 AM COT | 10:00 AM AST |
| 12:00 PM COT | 1:00 PM AST |
| 3:00 PM COT | 4:00 PM AST |
| 6:00 PM COT | 7:00 PM AST |
| 9:00 PM COT | 10:00 PM AST |
Summer (DST) Conversion (COT → ADT)
| Colombia Time (summer) | Canada Atlantic Time (summer) |
|---|---|
| 12:00 AM COT | 2:00 AM ADT |
| 6:00 AM COT | 8:00 AM ADT |
| 9:00 AM COT | 11:00 AM ADT |
| 12:00 PM COT | 2:00 PM ADT |
| 3:00 PM COT | 5:00 PM ADT |
| 6:00 PM COT | 8:00 PM ADT |
| 9:00 PM COT | 11:00 PM ADT |
Daylight Saving Time (DST) Notes
- Canada Atlantic Time observes DST. Clocks advance 1 hour to ADT (UTC-3:00) roughly from month 3 to 11.
- The offset difference shifts between 1h (standard) and 2h (DST season). Always verify the current offset using the live converter below.
Frequently Asked Questions
How do I convert COT to AST?
Add 1 hours to the COT time to get AST. For example, 9:00 AM COT = 10:00 AM AST.
What is the current UTC offset for Colombia Time?
Colombia Time is always UTC-5:00 (COT) — it does not observe DST.
Is Canada Atlantic Time ahead or behind Colombia Time?
Canada Atlantic Time is 1 hour ahead of Colombia Time in standard time.
When is a good time to schedule a meeting between COT and AST?
A good overlap window is around 9:00 AM COT / 10:00 AM AST, which falls within business hours for both timezones.
Related Timezone Conversions
Colombia Time → US Eastern TimeCOT / ESTColombia Time → US Central TimeCOT / CSTColombia Time → US Mountain TimeCOT / MSTColombia Time → US Pacific TimeCOT / PSTColombia Time → US Alaska TimeCOT / AKSTColombia Time → Hawaii TimeCOT / HSTColombia Time → Brasília TimeCOT / BRTColombia Time → Argentina TimeCOT / ART
Need the exact current time?
Use the live ToolsHub timezone converter to see current times, DST status, and schedule across time zones.