Occurs Every Four Years
This page is the CodyCross answer for the clue below from Cats, Group 1738, Puzzle 3 (Playful Antics).
Question is: Occurs Every Four Years
and the answer is: LEAPDAY
Word Meaning:
LEAP DAY — An extra day intercalated into a year, especially the day intercalated into the Julian calendar every fourth year and into the Gregorian calendar every fourth year excepting centuries not divisible by 400, usually reckoned as February 29th.
Definitions from Wiktionary.