HST to COT
+5hHST
HSTSOURCECOT
COTGreen rows indicate typical business hours (9 AM - 5 PM)
HST and COT on the World Map
The map below highlights the HST (Hawaii Standard Time) and COT (Colombia Time) timezone regions across the globe.
HST – Hawaii Standard Time
UTC-10:00Hawaii Standard Time (HST) is the time zone for the Hawaiian Islands, 10 hours behind UTC.
- •Hawaii does not observe daylight saving time.
- •HST is 5 hours behind EST in winter and 6 hours behind EDT in summer.
- •Hawaii is one of only two US states that don't observe DST (the other is Arizona).
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.
Comparing Time Zones: HST and COT
HST runs on Hawaii Standard Time (HST) at UTC-10:00. COT runs on Colombia Time (COT) at UTC-05:00. That puts HST 5 hours ahead of COT — a difference of +5h at the current offsets.
In practice, when it is 9:00 AM in HST it is 2:00 PM in COT. Midnight in HST is 5:00 AM in COT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
HST to COT time conversion table
| HST (HST) | COT (COT) | Day |
|---|---|---|
| 12:00 AM | 5:00 AM | same day |
| 6:00 AM | 11:00 AM | same day |
| 7:00 AM | 12:00 PM | same day |
| 8:00 AM | 1:00 PM | same day |
| 9:00 AM | 2:00 PM | same day |
| 12:00 PM | 5:00 PM | same day |
| 3:00 PM | 8:00 PM | same day |
| 5:00 PM | 10:00 PM | same day |
| 6:00 PM | 11:00 PM | same day |
| 9:00 PM | 2:00 AM | next day |
Why people convert HST to COT time
- Scheduling a call from HST to COT: a 10:00 AM start in HST lands at 3:00 PM in COT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both HST and COT are inside the 9-to-5 working day between 9:00 AM and 12:00 PM HST time (2:00 PM–5:00 PM COT). That is roughly 3 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in HST is 1:00 AM in COT makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM HST" is unambiguous; "3 PM" across a +5h gap is not.
- Block 9:00 AM–12:00 PM HST as the recurring meeting window if you work primarily from HST and need COT colleagues present.
About HST (Hawaii Standard Time)
Hawaii Standard Time (HST) is used in the state of Hawaii and does not observe daylight saving time. This makes HST one of the most consistent time zones in the US. The Hawaiian Islands are among the last places on Earth to see a new calendar day.
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 HST and COT
Both HST and COT sit inside the 9 AM – 5 PM working day between 9:00 AM–12:00 PM HST, which is 2:00 PM–5:00 PM COT. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
HST and COT overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
HST is 5 hours ahead of COT (HST UTC-10:00 → COT UTC-05:00). The shared working window is 9:00 AM–12:00 PM HST. 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 HST and COT?
HST (HST, UTC-10:00) is 5 hours ahead of COT (COT, UTC-05:00). The gap is currently +5h.
How do I convert HST time to COT time?
Add +5h to HST local time. For example, 9:00 AM in HST is 2:00 PM in COT.
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 +5h offset from HST.
What is the best time to call COT from HST?
Call between 9:00 AM and 12:00 PM HST — that maps to 2:00 PM–5:00 PM COT and keeps both parties inside the working day.
Which is ahead, HST or COT?
HST is 5 hours ahead of COT. When it is 12:00 PM in HST it is 5:00 PM in COT.
Does daylight saving time affect the HST–COT difference?
Neither zone observes daylight saving time, so the +5h offset between HST and COT is fixed all year.
Which other cities share HST's time zone?
HST also covers Honolulu, Hilo, Kailua, Pearl City, Kapolei.
Which countries use HST, HST's zone?
HST is used in United States (Hawaii).
Is there a day difference between HST and COT?
Not normally. The +5h gap only pushes the date over for late-evening times.
What is the time difference between HST and COT?
COT is +5h from HST.
What timezone is HST in?
HST operates on its local timezone.
What timezone is COT in?
COT operates on its local timezone.
Which countries use HST (Hawaii Standard Time)?
HST is used in United States (Hawaii).
Does HST observe daylight saving time?
No, HST does not observe daylight saving time and remains at UTC-10:00 year-round.
What are some interesting facts about HST?
Hawaii does not observe daylight saving time. HST is 5 hours behind EST in winter and 6 hours behind EDT in summer.
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 HST, what time is it in COT?
When it is 12:00 AM (midnight) in HST (HST), it is +5h later in COT (COT).
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