Central Standard Time
CST means UTC−06:00 throughout the year. Central Time follows regional clock rules and uses UTC−06:00 on your selected date.
Use CT for local civil time →Other meanings: China Standard Time.
TIME ZONE CONVERTER
CST to London
Time Converter
Convert Central Standard Time to London, United Kingdom. Compare dates, seasonal differences and meeting hours.
CST is 6h or 7h behind London in 2026, depending on the date.
9 AM CST = 3 PM London
Selected date: November 3, 2026. Fixed abbreviations retain their stated UTC offsets.
THE QUICK REFERENCE
CSVCST to London conversion table
November 3, 2026 · Date changes are marked.
View the full 24-hour table
| CST | London |
|---|---|
| 12:00 AM | 6:00 AM |
| 1:00 AM | 7:00 AM |
| 2:00 AM | 8:00 AM |
| 3:00 AM | 9:00 AM |
| 4:00 AM | 10:00 AM |
| 5:00 AM | 11:00 AM |
| 6:00 AM | 12:00 PM |
| 7:00 AM | 1:00 PM |
| 8:00 AM | 2:00 PM |
| 9:00 AM | 3:00 PM |
| 10:00 AM | 4:00 PM |
| 11:00 AM | 5:00 PM |
| CST | London |
|---|---|
| 12:00 PM | 6:00 PM |
| 1:00 PM | 7:00 PM |
| 2:00 PM | 8:00 PM |
| 3:00 PM | 9:00 PM |
| 4:00 PM | 10:00 PM |
| 5:00 PM | 11:00 PM |
| 6:00 PM | 12:00 AM +1 day |
| 7:00 PM | 1:00 AM +1 day |
| 8:00 PM | 2:00 AM +1 day |
| 9:00 PM | 3:00 AM +1 day |
| 10:00 PM | 4:00 AM +1 day |
| 11:00 PM | 5:00 AM +1 day |
Starting with the London working day
These examples start on 2026-11-03 in London.
09:00 London03:00 →CST · 2026-11-03
17:00 London11:00 →CST · 2026-11-03
Which time-zone meaning are we using?
ONE CLOCK TIME. THE WHOLE YEAR.
Year CSV09:00 CST to London throughout 2026
Keeping 09:00 on the CST clock produces 2 different destination clock/date answers in 2026. The ranges below use CST calendar dates, including transition days.
| Dates in CST · 2026 | London answer | Source → destination offsets | Explore |
|---|---|---|---|
| Jan 1 – Mar 2887 dates | 15:00Same date | UTC−06:00 → UTC | |
| Mar 29 – Oct 24210 dates | 16:00Same date | UTC−06:00 → UTC+01:00 | |
| Oct 25 – Dec 3168 dates | 15:00Same date | UTC−06:00 → UTC |
Every calendar date is included, not just workdays. Date ranges include both endpoints. Based on IANA 2026e; future rules may change.
DON’T LOSE A DAY
When does CST time become a different date in London?
Your complete source day: 2026-11-03. Each range shows which destination date to use.
CST · 2026-11-0300:00–18:00UTC−06:00
London · 2026-11-0306:00–24:00UTC Same date
CST · 2026-11-0318:00–24:00UTC−06:00
London · 2026-11-0400:00–06:00UTC Next day
Range starts are included; ends are excluded. 24:00 means midnight at the end of that date. Repeated hours appear separately with their UTC offsets. The strip is proportional to elapsed time.
THE BIGGER PICTURE
2026A year of time differences.
How London compares with CST throughout 2026.
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
+6h
+7h
+6h
London changes its UTC offset in 2026. CST is a fixed offset.
See exact change periods
| From (UTC, inclusive) | Until (UTC, exclusive) | London vs CST |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 29 Mar 2026, 01:00 UTC | 6h ahead |
| 29 Mar 2026, 01:00 UTC | 25 Oct 2026, 01:00 UTC | 7h ahead |
| 25 Oct 2026, 01:00 UTC | 1 Jan 2027, 00:00 UTC | 6h ahead |
CLOCK CHANGES
What changes at the next clock adjustment?
Exact periods outside the most common difference in 2026
The most frequent difference has London 7h ahead relative to CST. Exceptions:
| From (UTC, inclusive) | Until (UTC, exclusive) | Compared with CST |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 29 Mar 2026, 01:00 UTC | 6h ahead |
| 25 Oct 2026, 01:00 UTC | 1 Jan 2027, 00:00 UTC | 6h ahead |
PLAN BEYOND A SINGLE DAY
Daily CSVCST–London working hours through 2026
Every date calculated with your working windows. 261 selected CST workdays; public holidays are not applied.
Least shared time1h
Most common1h
Most shared time2h
Days without a 60-min slot0 / 261
A start time that survives the whole year.
Start a 60-minute meeting in CST 09:00.
These starts fit both working windows on every selected CST workday in 2026, using a 15-minute start grid. The end of each range is the last valid start.
CST: 09:00–17:00, Mon, Tue, Wed, Thu, Fri. London: 09:00–17:00, Mon, Tue, Wed, Thu, Fri.
Calculation details and repeated hours
Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.
THE DETAILS THAT MATTER
CST to London: useful answers
Why is the CST to London difference sometimes 6 hours and sometimes 7 hours?
CST is 6h or 7h behind London in 2026, depending on the date. London changes its UTC offset in 2026. CST is a fixed offset.
Is CST the same as local city time?
CST is fixed at UTC−06:00. Chicago (CT) to London uses regional rules instead. On 2026-11-03, 09:00 at the source becomes 15:00 at the destination (GMT). Choose the local-city option above when that is the clock you mean.
Which cities match CST throughout 2026?
Mexico City, Mexico; Guatemala City, Guatemala; Managua, Nicaragua; Tegucigalpa, Honduras keep the same UTC−06:00 offset as fixed CST throughout 2026 under the published rules. Matching an offset does not mean every place uses the abbreviation CST.
Does the CST–London time difference change in 2026?
The published rules produce 3 periods with 2 different offsets in 2026. See the annual chart for the exact boundaries of each period.
Does this conversion change the calendar date?
09:00 in CST on 2026-11-03 is 15:00 in London on 2026-11-03. This selected time stays on the same date in both places. Other times can cross midnight.
Can CST and London meet during working hours?
Your selected working windows share 2h on 2026-11-03. The planner above checks the whole meeting duration and shows suitable start times. Edit the windows to match your team.
Related time-zone meanings and conversions
London to CST Reverse the conversion direction.Chicago to London Use the local clock in Chicago, including seasonal changes.CDT to London Compare CDT instead of CST; both labels have fixed UTC offsets.CST to GMT GMT is a fixed offset; London follows local clock rules.CST to BST BST is a fixed offset; London follows local clock rules.
Calculated with IANA 2026e. Working hours are your preferences; public holidays and calendar availability are not included. Our methodology