CDT to EDT time conversion
EDT is 1 hour ahead of CDT.
Time difference with your location
CDT is 5 hours behind UTC. Compare with your local time →
Choose a date and time
Choose the local time in CDT to convert it to EDT on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · CDT → EDT
This table converts each hour in CDT to EDT on 2026-10-21.
- Working hours
- Outside working hours
- Night hours
| CDT | EDT | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 01:001:00 AM | |
| 01:001:00 AM | 02:002:00 AM | |
| 02:002:00 AM | 03:003:00 AM | |
| 03:003:00 AM | 04:004:00 AM | |
| 04:004:00 AM | 05:005:00 AM | |
| 05:005:00 AM | 06:006:00 AM | |
| 06:006:00 AM | 07:007:00 AM | |
| 07:007:00 AM | 08:008:00 AM | |
| 08:008:00 AM | 09:009:00 AM | ✓ |
| 09:009:00 AM | 10:0010:00 AM | ✓ |
| 10:0010:00 AM | 11:0011:00 AM | ✓ |
| 11:0011:00 AM | 12:0012:00 PM | ✓ |
| 12:0012:00 PM | 13:001:00 PM | ✓ |
| 13:001:00 PM | 14:002:00 PM | ✓ |
| 14:002:00 PM | 15:003:00 PM | ✓ |
| 15:003:00 PM | 16:004:00 PM | ✓ |
| 16:004:00 PM | 17:005:00 PM | ✓ |
| 17:005:00 PM | 18:006:00 PM | |
| 18:006:00 PM | 19:007:00 PM | |
| 19:007:00 PM | 20:008:00 PM | |
| 20:008:00 PM | 21:009:00 PM | |
| 21:009:00 PM | 22:0010:00 PM | |
| 22:0010:00 PM | 23:0011:00 PM | |
| 23:0011:00 PM | 00:0012:00 AM +1 day |
Quick conversion examples
These examples use CDT (UTC-5) and EDT (UTC-4); choosing a date applies the local clock changes.
Conversion formula: EDT = CDT + 1h · EST = CST + 1h · CST + 2h · EST = CDT.
| CDT | EDT |
|---|---|
| 6:00 AM CDT | = 7:00 AM EDT |
| 7:00 AM CDT | = 8:00 AM EDT |
| 8:00 AM CDT | = 9:00 AM EDT |
| 9:00 AM CDT | = 10:00 AM EDT |
| 10:00 AM CDT | = 11:00 AM EDT |
| 12:00 PM CDT | = 1:00 PM EDT |
| 3:00 PM CDT | = 4:00 PM EDT |
| 5:00 PM CDT | = 6:00 PM EDT |
| 6:00 PM CDT | = 7:00 PM EDT |
| 8:00 PM CDT | = 9:00 PM EDT |
Overlapping meeting hours
The 08:00–18:00 working day in CDT and EDT overlaps for 9 hours on 2026-10-21.
- Shared working hours
- 08:00–17:00 CDT · 09:00–18:00 EDT
Clock changes on both sides, 2026–2028
CDT and EDT have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | CDT | EDT |
|---|---|---|
| 2026 | · 02:00 → 03:00 · 02:00 → 01:00 | · 02:00 → 03:00 · 02:00 → 01:00 |
| 2027 | · 02:00 → 03:00 · 02:00 → 01:00 | · 02:00 → 03:00 · 02:00 → 01:00 |
| 2028 | · 02:00 → 03:00 · 02:00 → 01:00 | · 02:00 → 03:00 · 02:00 → 01:00 |
At the start of 2026, EST is 1 hour ahead of CST. The difference changes during the following periods.
- From 2026-03-08 01:00 CST until 2026-03-08 03:00 CDT, EDT is 2 hours ahead of CST.
- From 2026-11-01 01:00 CDT until 2026-11-01 01:00 CST, EST has the same time as CDT.
- From 2027-03-14 01:00 CST until 2027-03-14 03:00 CDT, EDT is 2 hours ahead of CST.
- From 2027-11-07 01:00 CDT until 2027-11-07 01:00 CST, EST has the same time as CDT.
- From 2028-03-12 01:00 CST until 2028-03-12 03:00 CDT, EDT is 2 hours ahead of CST.
- From 2028-11-05 01:00 CDT until 2028-11-05 01:00 CST, EST has the same time as CDT.
Frequently asked questions
What time is 9 AM CDT in EDT?
9:00 AM CDT = 10:00 AM EDT, using UTC-5 and UTC-4. Choose a date above for the seasonal local time.
Does the time difference between CDT and EDT change during the year?
Yes. During 2026–2028: EDT has the same time as CDT; EDT is 1 hour ahead of CDT; EDT is 2 hours ahead of CDT. The clock-change table gives the dates for both sides.
How do I tell whether it is day or night in EDT?
Read the UTC-4 clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.
What is the best time to call between CDT and EDT?
The shared 08:00–18:00 working window is 08:00–17:00 UTC-5 / 09:00–18:00 UTC-4, a total of 9 hours.
What is the time difference between CDT and EDT now?
Right now, UTC-4 is 1 hour ahead of UTC-5. Conversion formula: EDT = CDT + 1h · EST = CST + 1h · CST + 2h · EST = CDT.