Bogotá to AST
+1hBogotá
COTSOURCEAST
ASTGreen rows indicate typical business hours (9 AM - 5 PM)
COT and AST on the World Map
The map below highlights the COT (Colombia Time) and AST (Atlantic Standard Time) timezone regions across the globe.
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.
AST – Atlantic Standard Time
UTC-04:00Atlantic Standard Time (AST) is the time zone for the Canadian Atlantic provinces and the Caribbean, 4 hours behind UTC.
- •Puerto Rico uses AST year-round and does not observe DST.
- •AST is 1 hour ahead of EST.
- •Halifax, the capital of Nova Scotia, is the largest city in AST Canada.
Time Conversion Guide: Bogotá to AST
Bogotá runs on Colombia Standard Time (COT) at UTC-05:00. AST runs on Atlantic Standard Time (AST) at UTC-04:00. That puts Bogotá 1 hour ahead of AST — a difference of +1h at the current offsets.
In practice, when it is 9:00 AM in Bogotá it is 10:00 AM in AST. Midnight in Bogotá is 1:00 AM in AST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Bogotá to AST time conversion table
| Bogotá (COT) | AST (AST) | 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 Bogotá to AST time
- Scheduling a call from Bogotá to AST: a 10:00 AM start in Bogotá lands at 11:00 AM in AST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Bogotá and AST are inside the 9-to-5 working day between 9:00 AM and 4:00 PM COT time (10:00 AM–5:00 PM AST). That is roughly 7 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Bogotá is 9:00 PM in AST makes it easy to avoid calling at 3 AM.
- 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 Bogotá and need AST 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 AST (Atlantic Standard Time)
Atlantic Standard Time (AST) covers Canada's Atlantic provinces (Nova Scotia, New Brunswick, Prince Edward Island, and most of Labrador), as well as several Caribbean nations. Puerto Rico and the US Virgin Islands use AST year-round without daylight saving time. The Canadian provinces switch to Atlantic Daylight Time (ADT) in summer.
Best time to call between Bogotá and AST
Both Bogotá and AST 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 AST. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Bogotá and AST share 7 hours of working-hours overlap (9:00 AM–4:00 PM COT), so scheduling a live meeting is straightforward.
Bogotá is 1 hour ahead of AST (COT UTC-05:00 → AST 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
Bogotá
Does not observe DST
AST
☀ Currently in DST
Standard: UTC-04:00 · DST: UTC-03:00
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:
Frequently Asked Questions
What is the time difference between Bogotá and AST?
Bogotá (COT, UTC-05:00) is 1 hour ahead of AST (AST, UTC-04:00). The gap is currently +1h.
How do I convert Bogotá time to AST time?
Add +1h to Bogotá local time. For example, 9:00 AM in Bogotá is 10:00 AM in AST.
What time is it in AST right now?
AST uses AST 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 Bogotá.
What is the best time to call AST from Bogotá?
Call between 9:00 AM and 4:00 PM COT — that maps to 10:00 AM–5:00 PM AST and keeps both parties inside the working day.
Which is ahead, Bogotá or AST?
Bogotá is 1 hour ahead of AST. When it is 12:00 PM in Bogotá it is 1:00 PM in AST.
Do Bogotá and AST use different time zones?
Bogotá (Colombia) uses COT at UTC-05:00, while AST uses AST at UTC-04:00. The IANA identifiers are America/Bogota and America/Halifax.
Does daylight saving time affect the Bogotá–AST difference?
Neither zone observes daylight saving time, so the +1h offset between Bogotá and AST is fixed all year.
Which other cities share Bogotá's time zone?
COT also covers Bogotá, Medellín, Cali, Barranquilla, Cartagena.
Which countries use COT, Bogotá's zone?
COT is used in Colombia.
Is there a day difference between Bogotá and AST?
Not normally. The +1h gap only pushes the date over for late-evening times.
What is the time difference between Bogotá and AST?
AST is +1h from Bogotá.
What timezone is Bogotá in?
Bogotá operates on its local timezone.
What timezone is AST in?
AST 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 AST timezone?
Major cities in the AST timezone include Halifax, San Juan, Santo Domingo, Caracas, La Paz, Fredericton, Charlottetown.
What is the UTC offset for AST?
Atlantic Standard Time (AST) is at UTC-04:00. During daylight saving time, it shifts to ADT.
What should I know about the AST timezone?
Puerto Rico uses AST year-round and does not observe DST. AST is 1 hour ahead of EST.
When is it midnight in Bogotá, what time is it in AST?
When it is 12:00 AM (midnight) in Bogotá (COT), it is +1h later in AST (AST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Bogotá time conversions
- bogota to cot
- bogota to colombia
- bogota to new york
- bogota to los angeles
- bogota to chicago
- bogota to denver
- bogota to toronto
- bogota to vancouver
- bogota to mexico city
- bogota to sao paulo
- bogota to buenos aires
- bogota to lima
- bogota to santiago
- bogota to anchorage
- bogota to london
- bogota to dubai
- bogota to tokyo
- bogota to singapore
- bogota to sydney
- bogota to paris
- bogota to delhi
- bogota to mumbai
- bogota to berlin
- bogota to hong kong
- bogota to kathmandu
- new york to bogota
- london to bogota
- dubai to bogota
- tokyo to bogota
- singapore to bogota
- sydney to bogota
- los angeles to bogota
- paris to bogota
- delhi to bogota
- mumbai to bogota
- berlin to bogota
See every conversion from Bogotá →·See every conversion from AST →