CST → GMT Converter
Chicago futures markets to London — commodity and derivatives coordination.
CST → GMT
1:40 PM
Central Daylight Time (CDT)
Thursday, June 11, 2026
UTC-5 (DST active)
7:40 PM
British Summer Time (GMT+1)
Thursday, June 11, 2026
UTC+1 (DST active)
Time Zone Converter
CST·Chicago
1:40 PM
Thursday, June 11, 2026
GMT·London
7:40 PM
Thursday, June 11, 2026
Compare Times
| CST | GMT |
|---|
Morning
| CST | GMT |
|---|---|
| 12:00 AM CST | 6:00 AM GMT |
| 1:00 AM CST | 7:00 AM GMT |
| 2:00 AM CST | 8:00 AM GMT |
| 3:00 AM CST | 9:00 AM GMT |
| 4:00 AM CST | 10:00 AM GMT |
| 5:00 AM CST | 11:00 AM GMT |
| 6:00 AM CST | 12:00 PM GMT |
| 7:00 AM CST | 1:00 PM GMT |
| 8:00 AM CST | 2:00 PM GMT |
| 9:00 AM CST | 3:00 PM GMT |
| 10:00 AM CST | 4:00 PM GMT |
| 11:00 AM CST | 5:00 PM GMT |
Afternoon
| CST | GMT |
|---|---|
| 12:00 PM CST | 6:00 PM GMT |
| 1:00 PM CST | 7:00 PM GMT |
| 2:00 PM CST | 8:00 PM GMT |
| 3:00 PM CST | 9:00 PM GMT |
| 4:00 PM CST | 10:00 PM GMT |
Evening
| CST | GMT |
|---|---|
| 5:00 PM CST | 11:00 PM GMT |
| 6:00 PM CST | 12:00 AM GMT |
| 7:00 PM CST | 1:00 AM GMT |
| 8:00 PM CST | 2:00 AM GMT |
| 9:00 PM CST | 3:00 AM GMT |
| 10:00 PM CST | 4:00 AM GMT |
| 11:00 PM CST | 5:00 AM GMT |
Frequently Asked Questions: CST to GMT
What is the time difference between Central Time and UK Time?
GMT is 6 hours ahead of CST (standard time).
What time is midnight in CST in GMT?
Midnight (12:00 AM) in Central Time translates to 6:00 AM GMT in UK Time.
When do business hours overlap between CST and GMT?
The business hours overlap window is 09:00–11:00 CST (15:00–17:00 GMT). The shared window is limited; aim for the earlier part of this range when possible.
Common Time Conversions
EST · New York →
CST · Chicago →
MST · Denver →
PST · Los Angeles →
AKST · Anchorage →
HST · Honolulu →
UTC · Universal →
GMT · London →
IST · New Delhi →
CET · Paris →
How Time Zone Conversion Works
Time zone conversion works by comparing the UTC offset of one location to another. Every city or region is measured relative to Coordinated Universal Time (UTC), which acts as the global reference point for civil time.
GMT is 6 hours ahead of CST (standard time).
Daylight Saving Time: Both CST and GMT observe DST, but switch on different dates. For a few weeks each spring and autumn, the gap shifts by 1 hour — a common source of missed meetings and calendar tool errors.
Best time to call London from Chicago
Planning a remote meeting or international call? The optimal business hours overlap between Chicago and London is moderate, with a limited shared window to work with.
Try Meeting Planner for multi-city group scheduling →CST
09:00–11:00
Central Time
GMT
15:00–17:00
Greenwich Time
Recommended time: 10:00 CST / 16:00 GMT
DST schedule for 2026
Current-year daylight saving start and end dates for the selected zones.
CST · Central Time
Standard offset −06:00
- Starts
- Mar 8, 2026 · 02:00 → 03:00
- second_sunday_of_march
- Ends
- Nov 1, 2026 · 02:00 → 01:00
- first_sunday_of_november
- Daylight time
- CDT · −05:00
Most of Mexico no longer observes DST as of 2022; only a few border-state municipalities still do.
GMT · Greenwich Time
Standard offset +00:00
- Starts
- Mar 29, 2026 · 01:00 → 02:00
- last_sunday_of_march
- Ends
- Oct 25, 2026 · 02:00 → 01:00
- last_sunday_of_october
- Daylight time
- BST · +01:00
GMT countries vary. The UK, Ireland, and Portugal observe summer time; Iceland and most of West Africa remain on GMT year-round.
Principal Cities
CST — Central Time
- Mexico CityMexico
- ChicagoUnited States
- HoustonUnited States
- GuadalajaraMexico
GMT — Greenwich Time
- LondonUnited Kingdom
- DublinIreland
- LisbonPortugal
- CasablancaMorocco
Flight Information
Route
ORD ↔ LHR
Avg. flight time
8h
Direct flights
Available
~8h direct flight.