CDT to CST converter
Same clocks, two names. Central Time runs on CDT in summer and CST in winter, so a time written in the wrong one is an hour off.
Convert Central Daylight Time (CDT) to Central Standard Time (CST) for any date and time.
CST is 1 hour behind CDT. Central Time uses CDT from March to November and CST the rest of the year.
Right now Central Time is on CDT (UTC−5), until 1 November 2026. CST is always 1 hour behind CDT.
9:00 am to 5:00 pm CDT is 8:00 am to 4:00 pm CST.
- 8:00 am CDT is 7:00 am CST
- 9:00 am CDT is 8:00 am CST
- 10:00 am CDT is 9:00 am CST
- 12:00 pm CDT is 11:00 am CST
- 3:00 pm CDT is 2:00 pm CST
- 5:00 pm CDT is 4:00 pm CST
Hours in CDT, Fri, Oct 23
CDT
Central Daylight Time, UTC−5
Fri, Oct 23
UTC−5ReferenceOutside working hoursCST
Central Standard Time, UTC−6
Fri, Oct 23
UTC−6−1h from CDTOutside working hours
Best time to meet: 10:00 AM–5:00 PM in CDT on Fri, Oct 23, when everyone is inside working hours.
Book a meeting in this windowWorking hours: 9:00 AM–5:00 PM, Monday to FridayEveryone at work
CDT to CST conversion table
Every hour of the day in CDT, converted to CST. Shaded cells are working hours (9:00 am to 5:00 pm); green rows are working hours in both zones.
| CDT | CST |
|---|---|
| 12:00 am CDT | 11:00 pm CST(day before) |
| 1:00 am CDT | 12:00 am CST |
| 2:00 am CDT | 1:00 am CST |
| 3:00 am CDT | 2:00 am CST |
| 4:00 am CDT | 3:00 am CST |
| 5:00 am CDT | 4:00 am CST |
| 6:00 am CDT | 5:00 am CST |
| 7:00 am CDT | 6:00 am CST |
| 8:00 am CDT | 7:00 am CST |
| 9:00 am CDT | 8:00 am CST |
| 10:00 am CDT | 9:00 am CST |
| 11:00 am CDT | 10:00 am CST |
| 12:00 pm CDT | 11:00 am CST |
| 1:00 pm CDT | 12:00 pm CST |
| 2:00 pm CDT | 1:00 pm CST |
| 3:00 pm CDT | 2:00 pm CST |
| 4:00 pm CDT | 3:00 pm CST |
| 5:00 pm CDT | 4:00 pm CST |
| 6:00 pm CDT | 5:00 pm CST |
| 7:00 pm CDT | 6:00 pm CST |
| 8:00 pm CDT | 7:00 pm CST |
| 9:00 pm CDT | 8:00 pm CST |
| 10:00 pm CDT | 9:00 pm CST |
| 11:00 pm CDT | 10:00 pm CST |
Best times to meet
Your working hours overlap for 7 hours, from 10:00 am CDT (9:00 am CST) to 5:00 pm CDT (4:00 pm CST). That's the best window for a meeting.
About these time zones
CDT: Central Daylight Time
Central Daylight Time is UTC−5. CDT is also used for Cuba Daylight Time (UTC−4). This page converts North American Central Time.
Texas, Illinois, Minnesota, Louisiana and most of the Midwest and South, plus Manitoba, from March to November. Saskatchewan and most of Mexico don't switch to CDT.
CST: Central Standard Time
Central Standard Time is UTC−6. CST is also used for China Standard Time (UTC+8) and Cuba Standard Time (UTC−5). This page converts North American Central Time.
Texas, Illinois, Minnesota, Louisiana and most of the Midwest and South, plus Manitoba in Canada. Saskatchewan and most of Mexico stay on CST all year. CT is the short form for the whole zone.
How the difference changes
CDT and CST are fixed offsets, so CST is always 1 hour behind CDT. What changes is which one Central Time uses: CDT from March to November, CST the rest of the year.