COT to CST Time Converter
COT and CST are on the same offset right now. There is no time difference between them today.
Best Time to Call Between COT and CST
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 CST. That's an 8-hour window.
both at work COT only CST only neither — hours along the strip are COT.
Common Times Converted
COT on the left, CST on the right.
COT to CST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| COT | CST | 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 CST 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.
CST — Central Standard 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. CST also stands for China Standard Time (UTC+8) and Cuba Standard Time (UTC-5). This page covers the North American one.
Saskatchewan sits inside the Central zone but never changes its clocks, so it matches CST in winter and its neighbors' MDT in summer.
What This Means in Practice
This gap is not fixed
CST 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 CST 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 CST
Frequently Asked Questions
What is the time difference between COT and CST?
COT and CST are currently on the same offset, so there is no difference between them right now.
What is 9:00 AM COT in CST?
9:00 AM COT is 9:00 AM CST.
What are the best hours to schedule a call between COT and CST?
Between 9:00 AM and 5:00 PM COT, which is 9:00 AM to 5:00 PM CST. Both sides are inside normal business hours through that window.
Does the difference between COT and CST change during the year?
Yes. CST 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.
Does CST always mean Central Standard Time?
CST also stands for China Standard Time (UTC+8) and Cuba Standard Time (UTC-5). This page covers the North American one.