GMT to CDT converter
CDT is 5 hours behind GMT right now. Live clocks on both sides, a direct time input, the full 24-hour table with a permalink per hour, and the real daylight-saving state — computed from the IANA tz database on every request, never from a stored offset.
Convert an exact time type it — no sliders
Conversion runs in your browser against the same IANA rules the server uses, so it keeps working offline and nothing you type is sent anywhere.
Daylight saving right now
Central Daylight Time
America/Chicago is currently on CDT (UTC-05:00), its daylight-saving clock.
next change: Sun, 1 Nov 2026 01:00 local → CST (80 days, clocks go back)
CDT is US Central Time in summer, UTC-5 — the same offset as winter EST, which is a classic source of one-hour scheduling bugs.
Greenwich Mean Time
Etc/GMT is on GMT (UTC+00:00).
no clock change scheduled — fixed at UTC+00:00
GMT is UTC+0 and never shifts. The UK observes GMT in winter only — in summer it is on BST (UTC+1), so "GMT" on a British invite dated in July usually means BST.
Best time to call green = 09:00–18:00 on both sides
4 overlapping working hours. The longest run is 14:00–18:00 GMT, which is 09:00–13:00 CDT.
GMT to CDT, hour by hour 13 August 2026 · every row is a permalink
| GMT | CDT | 12-hour | Day | Permalink |
|---|---|---|---|---|
| 00:00 | 19:00 CDT | 7:00 PM | previous day | 00:00 → |
| 01:00 | 20:00 CDT | 8:00 PM | previous day | 01:00 → |
| 02:00 | 21:00 CDT | 9:00 PM | previous day | 02:00 → |
| 03:00 | 22:00 CDT | 10:00 PM | previous day | 03:00 → |
| 04:00 | 23:00 CDT | 11:00 PM | previous day | 04:00 → |
| 05:00 | 00:00 CDT | 12:00 AM | same day | 05:00 → |
| 06:00 | 01:00 CDT | 1:00 AM | same day | 06:00 → |
| 07:00 | 02:00 CDT | 2:00 AM | same day | 07:00 → |
| 08:00 | 03:00 CDT | 3:00 AM | same day | 08:00 → |
| 09:00 | 04:00 CDT | 4:00 AM | same day | 09:00 → |
| 10:00 | 05:00 CDT | 5:00 AM | same day | 10:00 → |
| 11:00 | 06:00 CDT | 6:00 AM | same day | 11:00 → |
| 12:00 | 07:00 CDT | 7:00 AM | same day | 12:00 → |
| 13:00 | 08:00 CDT | 8:00 AM | same day | 13:00 → |
| 14:00 | 09:00 CDT | 9:00 AM | same day | 14:00 → |
| 15:00 | 10:00 CDT | 10:00 AM | same day | 15:00 → |
| 16:00 | 11:00 CDT | 11:00 AM | same day | 16:00 → |
| 17:00 | 12:00 CDT | 12:00 PM | same day | 17:00 → |
| 18:00 | 13:00 CDT | 1:00 PM | same day | 18:00 → |
| 19:00 | 14:00 CDT | 2:00 PM | same day | 19:00 → |
| 20:00 | 15:00 CDT | 3:00 PM | same day | 20:00 → |
| 21:00 | 16:00 CDT | 4:00 PM | same day | 21:00 → |
| 22:00 | 17:00 CDT | 5:00 PM | same day | 22:00 → |
| 23:00 | 18:00 CDT | 6:00 PM | same day | 23:00 → |