BST is British Summer Time — the clock the UK uses in the warmer months.

BST BST is British Summer Time是British Summer Time（英國夏令時間）——the clock the UK uses in the warmer months指英國在比較暖的月份使用的時鐘制度。

In spring, British clocks jump forward one hour; in autumn they jump back. In summer, London is one hour ahead of Greenwich Mean Time (GMT), so 12:00 GMT is 13:00 BST. The point is to give people more daylight in the evening.

In spring春天時，British clocks jump forward one hour英國時鐘會撥快一小時；in autumn秋天時，they jump back則撥回一小時。In summer夏天時，London is one hour ahead of Greenwich Mean Time (GMT)倫敦比格林威治標準時間（GMT）快一小時，so 12:00 GMT is 13:00 BST所以GMT的12:00就是BST的13:00。The point is to give people more daylight in the evening目的是讓大家傍晚有更多日照時間。

Taiwan does not change its clocks now, so the time gap with Britain is not the same all year: it shrinks in British summer and grows again in winter.

Taiwan does not change its clocks now台灣現在不會調整時鐘，so the time gap with Britain is not the same all year所以跟英國的時差全年不一樣：it shrinks in British summer英國夏天時時差會縮小，and grows again in winter冬天又會變大。

BST is only the UK's summer clock. Other countries do a similar trick under other names (in the US, daylight saving time).

BST is only the UK's summer clock BST只是英國夏天用的時鐘制度。Other countries do a similar trick under other names其他國家也有類似的做法，只是名稱不同（in the US, daylight saving time美國叫daylight saving time，日光節約時間）。

In winter, Britain is back on GMT, not BST.

In winter冬天時，Britain is back on GMT, not BST英國會回到GMT，而不是BST。