CST/CDT to UTC-4 time converter
UTC-4 is 1 hour ahead of CST/CDT. When it is 9:00 AM in CST/CDT, it is 10:00 AM in UTC-4.
3:51 PM in CST/CDT, Friday, October 16, 2026
Shared working hours (9:00–18:00)
CST/CDT to UTC-4 conversion table
Every hour of today in CST/CDT and the matching time in UTC-4. Light rows are typical working hours (9:00–18:00).
| CST/CDT | UTC-4 |
|---|---|
| 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 | 10:00 AM |
| 10:00 AM | 11:00 AM |
| 11:00 AM | 12:00 PM |
| 12:00 PM | 1:00 PM |
| 1:00 PM | 2:00 PM |
| 2:00 PM | 3:00 PM |
| 3:00 PM | 4:00 PM |
| 4:00 PM | 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 | 12:00 AM+1 day |
Best time to call or meet
Both sides are at work from 9:00 AM – 5:00 PM in CST/CDT (10:00 AM – 6:00 PM in UTC-4).
Daylight saving time and the difference
The difference changes during the year because CST/CDT and UTC-4 switch clocks on different dates:
- Oct 16, 2026 – Nov 1, 2026: +1h
- Nov 1, 2026 – Mar 14, 2027: +2h
- Mar 14, 2027 – Oct 16, 2027: +1h
More conversions
Questions and answers
What is the time difference between CST/CDT and UTC-4?
UTC-4 is 1 hour ahead of CST/CDT.
What time is it in UTC-4 when it is 9 AM in CST/CDT?
When it is 9:00 AM in CST/CDT, it is 10:00 AM in UTC-4.
When is the best time to call UTC-4 from CST/CDT?
Both sides are at work from 9:00 AM – 5:00 PM in CST/CDT (10:00 AM – 6:00 PM in UTC-4).
Does the time difference between CST/CDT and UTC-4 change?
Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.