Academic Calendar/3*12 weeks

Three 12-week blocks: trimesters (Northern hemisphere)

Period	Weeks	Trimester / Break
W38/49	12	Fall trimester
W50/53	3–4	Christmas break
W01/12	12	Winter trimester
W13/15	3	Easter break
W16/27	12	Spring trimester
W29/37	9	Summer break

Three 12-week blocks: trimesters with guaranteed Easter break

Period	Weeks	Trimester / Break
W36/47	12	Fall trimester
W48/53	5–6	Christmas break
W01/12	12	Winter trimester
W13/17	5	Easter break
W18/29	12	Spring trimester
W30/35	6	Summer break