BRITISH SUMMER TIME
Here's a well-known mnemonic rhyme indicating which way to reset the hour on clocks at the start and end of BST:
"Forward April, back September,
The rhyme's enduring popularity can be gauged from the fact that BST is actually from late March to late October! It was introduced during the Great War (1917) and lasts from the day after the 3rd Saturday in March until (usually) the day after the 4th Saturday in October.
A simpler phrase uses the "Fall" (now just an Americanism, but in fact an obsolete Elizabethan term for "Autumn"):
" Spring forward, Fall back."
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