COT to CT Time Converter
COT and CT are on the same offset right now. There is no time difference between them today.
Best Time to Call Between COT and CT
Both zones are inside normal business hours between 9:00 AM and 5:00 PM COT — that's 9:00 AM to 5:00 PM CT. That's an 8-hour window.
both at work COT only CT only neither — hours along the strip are COT.
Common Times Converted
COT on the left, CT on the right.
COT to CT: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| COT | CT | Working hours |
|---|---|---|
| 12:00 AM | 12:00 AM | — |
| 1:00 AM | 1:00 AM | — |
| 2:00 AM | 2:00 AM | — |
| 3:00 AM | 3:00 AM | — |
| 4:00 AM | 4:00 AM | — |
| 5:00 AM | 5:00 AM | — |
| 6:00 AM | 6:00 AM | — |
| 7:00 AM | 7:00 AM | — |
| 8:00 AM | 8:00 AM | — |
| 9:00 AM | 9:00 AM | Both zones |
| 10:00 AM | 10:00 AM | Both zones |
| 11:00 AM | 11:00 AM | Both zones |
| 12:00 PM | 12:00 PM | Both zones |
| 1:00 PM | 1:00 PM | Both zones |
| 2:00 PM | 2:00 PM | Both zones |
| 3:00 PM | 3:00 PM | Both zones |
| 4:00 PM | 4:00 PM | Both zones |
| 5:00 PM | 5:00 PM | — |
| 6:00 PM | 6:00 PM | — |
| 7:00 PM | 7:00 PM | — |
| 8:00 PM | 8:00 PM | — |
| 9:00 PM | 9:00 PM | — |
| 10:00 PM | 10:00 PM | — |
| 11:00 PM | 11:00 PM | — |
What COT and CT Actually Are
COT — Colombia Time
Bogotá, Medellín, Cali, Barranquilla. Standing at UTC-5:00 as written, and the region does not change its clocks, so that offset holds all year.
Colombia briefly tried daylight saving during the energy crisis of 1992-93 and has not repeated it.
CT — Central Time
Chicago, Houston, Dallas, Mexico City, Winnipeg. Standing at UTC-6:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to CST.
Central Time is the widest US zone by land area, stretching from the Gulf coast to the Canadian border, and it also covers Mexico City.
What This Means in Practice
This gap is not fixed
CT changes its clocks and COT does not, so the difference between them moves by an hour twice a year. A recurring meeting set now will drift for one side from Sunday, November 1, 2026 unless someone resets it.
Same clock, two names
COT and CT currently show the same time, so no conversion is needed today. They are separate labels because the regions behind them do not always stay in step.
Major Cities in Each Zone
Cities on COT
Cities on CT
Frequently Asked Questions
What is the time difference between COT and CT?
COT and CT are currently on the same offset, so there is no difference between them right now.
What is 9:00 AM COT in CT?
9:00 AM COT is 9:00 AM CT.
What are the best hours to schedule a call between COT and CT?
Between 9:00 AM and 5:00 PM COT, which is 9:00 AM to 5:00 PM CT. Both sides are inside normal business hours through that window.
Does the difference between COT and CT change during the year?
Yes. CT observes daylight saving and COT does not, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.