CST to Portsmouth Time Converter
GMT is 6 hours ahead of CST. 9:00 AM CST = 3:00 PM GMT.
GMT is 6 hours ahead of CST at the moment. To convert CST to Portsmouth Time, add 6 hours to the CST time: 9:00 AM CST = 3:00 PM GMT.
CST (Central Time) is used in Chicago, Dallas, Houston, Minneapolis, New Orleans, Winnipeg; Mexico City and Central America use UTC−6 all year. Portsmouth Time (Portsmouth time) is used in Portsmouth, UK.
CST here means North American Central Standard Time, not China Standard Time.
CST to Portsmouth Time time conversion table
CST to Portsmouth Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| CST | Portsmouth Time |
|---|---|
| 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 |
| CST | Portsmouth Time |
|---|---|
| 8:00 AM | 2:00 PM |
| 9:00 AM | 3:00 PM |
| 10:00 AM | 4:00 PM |
| 11:00 AM | 5:00 PM |
| 12:00 PM | 6:00 PM |
| 1:00 PM | 7:00 PM |
| 2:00 PM | 8:00 PM |
| 3:00 PM | 9:00 PM |
| CST | Portsmouth Time |
|---|---|
| 4:00 PM | 10:00 PM |
| 5:00 PM | 11:00 PM |
| 6:00 PM | 12:00 AM+1 |
| 7:00 PM | 1:00 AM+1 |
| 8:00 PM | 2:00 AM+1 |
| 9:00 PM | 3:00 AM+1 |
| 10:00 PM | 4:00 AM+1 |
| 11:00 PM | 5:00 AM+1 |
Conversion table from CST to Portsmouth Time for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in Portsmouth Time, −1 the previous day.
- ✓ marks 9 AM–5 PM in both places
- Greyed times are night in the destination (10 PM–6 AM)
How to convert CST to Portsmouth Time
Add 6 hours to the CST time to get Portsmouth Time.
Example: 9:00 AM CST = 3:00 PM GMT.
Across midnight: 10:00 PM CST = 4:00 AM GMT (next day). The date changes, so always check the day as well as the hour.
Time difference between CST and Portsmouth Time
The time difference between CST and Portsmouth Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 31 Dec 2025 – 7 Mar 2026: Portsmouth Time is 6 hours ahead of CST.
- 8 Mar 2026 – 27 Mar 2026: Portsmouth Time is 5 hours ahead of CST.
- 28 Mar 2026 – 23 Oct 2026: Portsmouth Time is 6 hours ahead of CST.
- 24 Oct 2026 – 31 Oct 2026: Portsmouth Time is 5 hours ahead of CST.
- 1 Nov 2026 – 30 Dec 2026: Portsmouth Time is 6 hours ahead of CST.
CST and Portsmouth Time during daylight saving time
- CST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from CST (UTC−6) to CDT (UTC−5).
- Portsmouth Time next changes on 28 Mar 2027: clocks go forward one hour at 00:59 local time, from GMT (UTC+0) to BST (UTC+1).
Best time for a meeting between CST and Portsmouth Time
CST and Portsmouth Time share 2 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 11:00 AM CST lands between 3:00 PM and 5:00 PM GMT, inside working hours for both.
CST to Portsmouth Time FAQ
What is the time difference between CST and Portsmouth Time?
Right now GMT is 6 hours ahead of CST. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM CST in Portsmouth Time?
9:00 AM CST is 3:00 PM GMT.
What is 12 PM (noon) CST in Portsmouth Time?
12:00 PM CST is 6:00 PM GMT.
Is Portsmouth Time ahead of or behind CST?
GMT is 6 hours ahead of CST, so it is later in Portsmouth Time than in CST.
Does CST change for daylight saving time?
Yes. CST next changes on 14 Mar 2027, when clocks go forward one hour from CST to CDT.
Does Portsmouth Time change for daylight saving time?
Yes. Portsmouth Time next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
What is the best time for a meeting between CST and Portsmouth Time?
CST and Portsmouth Time share 2 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 11:00 AM CST lands between 3:00 PM and 5:00 PM GMT, inside working hours for both.
Is CT the same as CST?
CST is the winter (standard) name of Central Time (CT). From March to November the same clocks are called CDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert Portsmouth Time to CST
Convert CST to other time zones
Convert other time zones to Portsmouth Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.