COT to JST Converter & Meeting Planner
Quick answer: 9:00 AM COT = 11:00 PM JST (fixed -05:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Colombia Time (COT) and Japan Standard Time (JST)? You need to account for the standard time difference. Japan Standard Time is normally 14 hours ahead of Colombia Time. Whether you are coordinating between teams in Bogotá and Medellín and Tokyo and Osaka, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM COT = 2:00 PM JST. The full 24-hour COT to JST table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM COT = 5:00 AM JST (+1 day).
| COT Time | JST Time |
|---|---|
| 12:00 AM (00:00) | 2:00 PM (14:00) |
| 1:00 AM (01:00) | 3:00 PM (15:00) |
| 2:00 AM (02:00) | 4:00 PM (16:00) |
| 3:00 AM (03:00) | 5:00 PM (17:00) |
| 4:00 AM (04:00) | 6:00 PM (18:00) |
| 5:00 AM (05:00) | 7:00 PM (19:00) |
| 6:00 AM (06:00) | 8:00 PM (20:00) |
| 7:00 AM (07:00) | 9:00 PM (21:00) |
| 8:00 AM (08:00) | 10:00 PM (22:00) |
| 9:00 AM (09:00) | 11:00 PM (23:00) |
| 10:00 AM (10:00) | 12:00 AM (00:00)+1 day |
| 11:00 AM (11:00) | 1:00 AM (01:00)+1 day |
| 12:00 PM (12:00) | 2:00 AM (02:00)+1 day |
| 1:00 PM (13:00) | 3:00 AM (03:00)+1 day |
| 2:00 PM (14:00) | 4:00 AM (04:00)+1 day |
| 3:00 PM (15:00) | 5:00 AM (05:00)+1 day |
| 4:00 PM (16:00) | 6:00 AM (06:00)+1 day |
| 5:00 PM (17:00) | 7:00 AM (07:00)+1 day |
| 6:00 PM (18:00) | 8:00 AM (08:00)+1 day |
| 7:00 PM (19:00) | 9:00 AM (09:00)+1 day |
| 8:00 PM (20:00) | 10:00 AM (10:00)+1 day |
| 9:00 PM (21:00) | 11:00 AM (11:00)+1 day |
| 10:00 PM (22:00) | 12:00 PM (12:00)+1 day |
| 11:00 PM (23:00) | 1:00 PM (13:00)+1 day |
Best time to call Tokyo from Bogotá
For most work calls, compare the normal business day in Bogotá (COT) with the business day in Tokyo (JST). COT commonly covers South America, while JST is mainly associated with East Asia.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
⚠️ There is no clean same-day business-hours overlap on 2026-07-05. A practical compromise is around 7:00 PM COT, which reaches 9:00 AM JST near the start of their workday.
- DST Safety: Neither COT nor JST uses Daylight Saving Time in our dataset, making business-hour relationships stable year-round.
- Colombia Stock Exchange (BVC): 09:30-16:00 local time in Bogotá.
- Tokyo Stock Exchange (TSE): 09:00-15:00 local time in Tokyo.
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Frequently Asked Questions
What is the time difference between COT and JST?
During standard time, Japan Standard Time is 14 hours ahead of Colombia Time.
Does Colombia observe Daylight Saving Time?
Colombia does not observe Daylight Saving Time and has no current plans to do so. COT remains fixed at UTC-05:00 every day of the year, providing a consistent, unchanging reference point for international business and logistics.
How does Colombia Time (COT) align with the US?
COT (UTC-05:00) matches US Eastern Standard Time (EST) exactly during the Northern Hemisphere winter, creating zero offset between Bogotá and New York. During US Daylight Saving Time in summer, COT runs one hour behind Eastern Daylight Time (EDT, UTC-04:00), maintaining a gap narrow enough that a full shared workday remains easily achievable — one of the tightest nearshore alignments available from South America.
Does Japan observe Daylight Saving Time?
Japan has not observed Daylight Saving Time since 1951, when the practice introduced during the Allied occupation was abolished by the Japanese government. JST has remained fixed at UTC+9:00 ever since, and there is no current legislation to reintroduce DST in Japan.
Is JST the same as Korean Standard Time (KST)?
Yes, South Korea's Korean Standard Time (KST) operates at the same UTC+9:00 offset as JST, and South Korea also does not observe Daylight Saving Time. The two countries share an identical clock year-round, which simplifies scheduling for the significant trade, technology, and cultural exchange between Tokyo and Seoul.