TimezoneToolbox

BST to CST converter

CST is usually 6 h behind BST. It is 5 h behind BST 8 Mar–29 Mar and 25 Oct–1 Nov 2026, because of daylight saving time.

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BST to CST table

For 12 July 2026, when CST is 6 h behind BST. Other dates: see the table on the right.

BSTCST24-hour
12:00 AM6:00 PM prev. day0:00 → 18:00
1:00 AM7:00 PM prev. day1:00 → 19:00
2:00 AM8:00 PM prev. day2:00 → 20:00
3:00 AM9:00 PM prev. day3:00 → 21:00
4:00 AM10:00 PM prev. day4:00 → 22:00
5:00 AM11:00 PM prev. day5:00 → 23:00
6:00 AM12:00 AM 6:00 → 0:00
7:00 AM1:00 AM 7:00 → 1:00
8:00 AM2:00 AM 8:00 → 2:00
9:00 AM3:00 AM 9:00 → 3:00
10:00 AM4:00 AM 10:00 → 4:00
11:00 AM5:00 AM 11:00 → 5:00
12:00 PM6:00 AM 12:00 → 6:00
1:00 PM7:00 AM 13:00 → 7:00
2:00 PM8:00 AM 14:00 → 8:00
3:00 PM9:00 AM 15:00 → 9:00
4:00 PM10:00 AM 16:00 → 10:00
5:00 PM11:00 AM 17:00 → 11:00
6:00 PM12:00 PM 18:00 → 12:00
7:00 PM1:00 PM 19:00 → 13:00
8:00 PM2:00 PM 20:00 → 14:00
9:00 PM3:00 PM 21:00 → 15:00
10:00 PM4:00 PM 22:00 → 16:00
11:00 PM5:00 PM 23:00 → 17:00

When the difference changes

Computed from the IANA tz database (release 2026c). Governments can change these rules; the live converter uses your browser’s own copy of the database.

2026: from (UTC)until (UTC)CST vs BST
1 January 20268 March 20266 h behind
8 March 202629 March 20265 h behind
29 March 202625 October 20266 h behind
25 October 20261 November 20265 h behind
1 November 202631 December 20266 h behind
2027: from (UTC)until (UTC)CST vs BST
1 January 202714 March 20276 h behind
14 March 202728 March 20275 h behind
28 March 202731 October 20276 h behind
31 October 20277 November 20275 h behind
7 November 202731 December 20276 h behind

BST: British Summer Time · BST time now
BST only exists from late March to late October. The rest of the year the UK is on GMT. This page follows the London clock either way.

CST: Central Time · CST time now
CST is also used for China Standard Time (UTC+8) and Cuba Standard Time. This page means US Central Time (America/Chicago), which switches to CDT (UTC−5) in summer.

Related converters

Questions

What is the time difference between BST and CST?

CST is usually 6 h behind BST. It is 5 h behind BST 8 Mar–29 Mar and 25 Oct–1 Nov 2026, because of daylight saving time.

What is 9 am BST in CST?

9:00 am BST is 3:00 AM CST, on dates when the usual difference applies. Use the converter above for any specific date.

Which BST does this page use?

BST only exists from late March to late October. The rest of the year the UK is on GMT. This page follows the London clock either way.

Which CST does this page use?

CST is also used for China Standard Time (UTC+8) and Cuba Standard Time. This page means US Central Time (America/Chicago), which switches to CDT (UTC−5) in summer.