“I'll return in a fortnight — it'll be July 15th.”
Usage Entry 1313 / 1350 60-second read
Fortnight vs. Month
Exactly 14 days versus a calendar month (28–31 days).
The comparisoni
“I'll return in a month — July 15th is 30 days away. A fortnight is exactly 14 days.”
The ruleii
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FORTNIGHT = 14 days. MONTH = 28–31.
FORTNIGHT (from "fourteen nights") is exactly 14 days. MONTH is a calendar month — 28, 29, 30, or 31 days. Fortnight is common in UK and Commonwealth English; Americans rarely use it outside the game.
Memory aidiii
Remember it like this
Fortnight = 2 weeks sharp.