Riyadh to Colombia
-8hRiyadh
ASTSOURCEColombia
COTGreen rows indicate typical business hours (9 AM - 5 PM)
AST and COT on the World Map
The map below highlights the AST (Arabia Standard Time) and COT (Colombia Time) timezone regions across the globe.
AST – Arabia Standard Time
UTC+03:00Arabia Standard Time (AST, UTC+03:00) is the time zone for Saudi Arabia and the other Gulf states of the Arabian peninsula.
- •None of the Gulf states on Arabia Standard Time observe daylight saving.
- •AST is the same offset as Moscow Standard Time and East Africa Time.
- •Riyadh is one hour ahead of Central European Time in winter.
- •The AST abbreviation is shared with Atlantic Standard Time (UTC-04:00).
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.
About Riyadh
WikipediaRiyadh operates on Arabia Standard Time (AST), UTC+3. As OPEC's de facto capital and home to Tadawul, Riyadh time impacts global energy markets.
Riyadh is growing rapidly as part of Saudi Vision 2030 modernization.
Everything You Need to Know About Riyadh and Colombia Time
Riyadh runs on Arabian Standard Time (AST) at UTC+03:00. Colombia runs on Colombia Standard Time (COT) at UTC-05:00. That puts Riyadh 8 hours behind Colombia — a difference of -8h at the current offsets.
In practice, when it is 9:00 AM in Riyadh it is 1:00 AM in Colombia. Midnight in Riyadh is 4:00 PM in Colombia. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Riyadh to Colombia time conversion table
| Riyadh (AST) | Colombia (COT) | Day |
|---|---|---|
| 12:00 AM | 4:00 PM | previous day |
| 6:00 AM | 10:00 PM | previous day |
| 7:00 AM | 11:00 PM | previous day |
| 8:00 AM | 12:00 AM | same day |
| 9:00 AM | 1:00 AM | same day |
| 12:00 PM | 4:00 AM | same day |
| 3:00 PM | 7:00 AM | same day |
| 5:00 PM | 9:00 AM | same day |
| 6:00 PM | 10:00 AM | same day |
| 9:00 PM | 1:00 PM | same day |
Why people convert Riyadh to Colombia time
- Scheduling a call from Riyadh to Colombia: a 10:00 AM start in Riyadh lands at 2:00 AM in Colombia, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -8h gap: Riyadh and Colombia 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 Colombia is 1:00 AM in Riyadh.
- Booking travel or deliveries: tracking Colombia local time against Riyadh keeps pickup windows and arrival estimates honest across the -8h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM AST" is unambiguous; "3 PM" across a -8h gap is not.
- With a -8h gap there is no shared 9-to-5 window, so alternate the early start: one week Riyadh takes the early slot, the next week Colombia does.
About AST (Arabia Standard Time)
Arabia Standard Time (AST) is fixed at UTC+03:00 all year across Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq and Yemen. None of these countries observes daylight saving time, so the offset never changes. The abbreviation collides with Atlantic Standard Time (UTC-04:00) used in eastern Canada and the Caribbean; this page covers the Arabian peninsula meaning. Arabia Standard Time is the same offset as Moscow Standard Time and East Africa Time, which makes scheduling with Europe straightforward — Riyadh is one hour ahead of Central European Time in winter and level with it during European summer time.
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 Riyadh and Colombia
With a -8h offset there is no overlap inside a normal 9 AM – 5 PM day. Colombia opens at 9:00 AM COT, which is 1:00 AM in Riyadh, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Riyadh and Colombia have no shared working hours because of the -8h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Riyadh is 8 hours behind Colombia (AST UTC+03:00 → 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.
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 Riyadh and Colombia?
Riyadh (AST, UTC+03:00) is 8 hours behind Colombia (COT, UTC-05:00). The gap is currently -8h.
How do I convert Riyadh time to Colombia time?
Add -8h to Riyadh local time. For example, 9:00 AM in Riyadh is 1:00 AM in Colombia.
What time is it in Colombia right now?
Colombia 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 -8h offset from Riyadh.
What is the best time to call Colombia from Riyadh?
There is no shared working-hours window because of the -8h gap. The closest option is 1:00 PM in Riyadh, which is 5:00 AM in Colombia.
Which is behind, Riyadh or Colombia?
Riyadh is 8 hours behind Colombia. When it is 12:00 PM in Riyadh it is 4:00 AM in Colombia.
Do Riyadh and Colombia use different time zones?
Riyadh (Saudi Arabia) uses AST at UTC+03:00, while Colombia (Colombia) uses COT at UTC-05:00. The IANA identifiers are Asia/Riyadh and America/Bogota.
Does daylight saving time affect the Riyadh–Colombia difference?
Neither zone observes daylight saving time, so the -8h offset between Riyadh and Colombia is fixed all year.
Which other cities share Riyadh's time zone?
AST also covers Riyadh, Jeddah, Doha, Kuwait City, Baghdad.
Which countries use AST, Riyadh's zone?
AST is used in Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq, Yemen.
Is there a day difference between Riyadh and Colombia?
Not normally. The -8h gap only pushes the date over the previous day.
What is the time difference between Riyadh and Colombia?
Colombia is -8h from Riyadh.
What timezone is Riyadh in?
Riyadh operates on Arabia Standard Time (AST), UTC+3. As OPEC's de facto capital and home to Tadawul, Riyadh time impacts global energy markets.
What timezone is Colombia in?
Colombia operates on its local timezone.
What are the business hours in Riyadh?
Standard business hours in Riyadh are 8:00 AM - 4:00 PM AST (Sunday-Thursday).
Which countries use AST (Arabia Standard Time)?
AST is used in Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq, Yemen.
Does AST observe daylight saving time?
No, AST does not observe daylight saving time and remains at UTC+03:00 year-round.
What are some interesting facts about AST?
None of the Gulf states on Arabia Standard Time observe daylight saving. AST is the same offset as Moscow Standard Time and East Africa Time.
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 Riyadh, what time is it in Colombia?
When it is 12:00 AM (midnight) in Riyadh (AST), it is -8h later in Colombia (COT).
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