utc now / zones / cdt-to-gmt

CDT to GMT converter

GMT is 5 hours ahead of CDT 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.

Central Daylight Time · America/Chicago
20:00:47
Wednesday, 12 August 2026 · CDT · UTC-05:00 · DST
⇄
Greenwich Mean Time · Etc/GMT
01:00:47
Thursday, 13 August 2026 · GMT · UTC+00:00

Convert an exact time type it — no sliders

01:00
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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

Greenwich Mean Time

Etc/GMT is currently on GMT (UTC+00:00).

no clock change scheduled — this zone is 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.

Central Daylight Time

America/Chicago is on CDT (UTC-05:00).

next change: Sun, 1 Nov 2026 01:00 local → CST (80 days)

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.

Best time to call green = 09:00–18:00 on both sides

4 overlapping working hours. The longest run is 09:00–13:00 CDT, which is 14:00–18:00 GMT.

Google Calendar Outlook download .ics

CDT to GMT, hour by hour 12 August 2026 · every row is a permalink

CDT GMT 12-hour Day Permalink
00:00 05:00 GMT 5:00 AM same day 00:00 →
01:00 06:00 GMT 6:00 AM same day 01:00 →
02:00 07:00 GMT 7:00 AM same day 02:00 →
03:00 08:00 GMT 8:00 AM same day 03:00 →
04:00 09:00 GMT 9:00 AM same day 04:00 →
05:00 10:00 GMT 10:00 AM same day 05:00 →
06:00 11:00 GMT 11:00 AM same day 06:00 →
07:00 12:00 GMT 12:00 PM same day 07:00 →
08:00 13:00 GMT 1:00 PM same day 08:00 →
09:00 14:00 GMT 2:00 PM same day 09:00 →
10:00 15:00 GMT 3:00 PM same day 10:00 →
11:00 16:00 GMT 4:00 PM same day 11:00 →
12:00 17:00 GMT 5:00 PM same day 12:00 →
13:00 18:00 GMT 6:00 PM same day 13:00 →
14:00 19:00 GMT 7:00 PM same day 14:00 →
15:00 20:00 GMT 8:00 PM same day 15:00 →
16:00 21:00 GMT 9:00 PM same day 16:00 →
17:00 22:00 GMT 10:00 PM same day 17:00 →
18:00 23:00 GMT 11:00 PM same day 18:00 →
19:00 00:00 GMT 12:00 AM next day 19:00 →
20:00 01:00 GMT 1:00 AM next day 20:00 →
21:00 02:00 GMT 2:00 AM next day 21:00 →
22:00 03:00 GMT 3:00 AM next day 22:00 →
23:00 04:00 GMT 4:00 AM next day 23:00 →

Every hour as its own page

00:00 CDT 01:00 CDT 02:00 CDT 03:00 CDT 04:00 CDT 05:00 CDT 06:00 CDT 07:00 CDT 08:00 CDT 09:00 CDT 10:00 CDT 11:00 CDT 12:00 CDT 13:00 CDT 14:00 CDT 15:00 CDT 16:00 CDT 17:00 CDT 18:00 CDT 19:00 CDT 20:00 CDT 21:00 CDT 22:00 CDT 23:00 CDT

CDT to GMT — questions

What time is it in GMT when it is CDT now?
GMT is currently 01:00 on Thursday, 13 August 2026 (GMT, UTC+00:00), while CDT is 20:00 (UTC-05:00). That is 5 hours ahead of the source clock right now.
How many hours ahead is GMT of CDT?
5 hours at this moment. The gap is not constant across the year: Central Daylight Time and Greenwich Mean Time change clocks on different dates (or one of them not at all), so a difference you hard-code in summer can be an hour wrong in winter. The table on this page is computed from the current tzdata rules, not from a fixed offset.
Is GMT on daylight saving time right now?
No. Etc/GMT is on GMT (UTC+00:00) at the moment.
Does GMT observe daylight saving time?
No. Etc/GMT stays on UTC+00:00 all year, so the difference from CDT only moves when CDT itself changes.
What is the best time to schedule a call between CDT and GMT?
There are 4 hours of overlap where both sides are inside a 09:00-18:00 working day. The longest block is 09:00–13:00 CDT, which is 14:00–18:00 GMT. Use the calendar buttons above to drop it straight into Google Calendar, Outlook or an .ics file.
Which IANA timezone name should I use for GMT in code?
Use Etc/GMT. Abbreviations like GMT are ambiguous and not resolvable by most libraries — Python's ZoneInfo, Java's ZoneId, Go's time.LoadLocation and JavaScript's Intl all expect the IANA name. Hard-coding UTC+00:00 instead will be wrong the moment the rules change.

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