Academic Calendar/12×4 weeks

Twelve 4-week blocks (months): semesters, quadmesters or trimesters (Northern hemisphere)

Period	W01/04	W05/08	W09/12	W13	W14/17	W18/21	W22/25	W26	W27/30	W31/34	W35/38	W39	W40/43	W44/47	W48/51	W52/53
Weeks	4	4	4	1	4	4	4	1	4	4	4	1	4	4	4	1–2
Description	Jan	Feb	Mar	🐰	Apr	May	Jun	😇	Jul	Aug	Sep	👼	Oct	Nov	Dec	🎅
Quart	Q1				Q2				Q3				Q4
Season	Winter			Spring				Summer				Fall				Winter
Trimester	Winter, Hilary			break	Spring, Easter			break	Summer, Trinity			break	Winter, Michaelmas			break
Semester	Winter			break	Summer							break	Winter
	Spring							break	Fall							break
Quadmester	Winter					Summer					Fall					break
	Winter			break	Spring					Fall					Winter
	Winter		Spring					break	Summer					Winter
	Fall	Spring					Summer					break	Fall