Quadrennium
From Infogalactic: the planetary knowledge core
Lua error in package.lua at line 80: module 'strict' not found.A quadrennium (pl. quadrennia or quadrenniums) is a period of 4 years, most commonly used in reference to the 4-year period between each Olympic Games. Also used in reference to the 4 year interval between leap years, for example when wishing friends and family a "Happy quadrennium" on February 29.
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