Calendar Wiki
Four 10-week blocks: trimesters with guaranteed Easter break
Period Weeks Trimester / Break
W40/41 2 Fall break
W42/51 10 Fall term
W52/01 2–3 Christmas break
W02/11 10 Winter term
W12/18 7 Easter holidays
W19/28 10 Spring term
W29 1 Summer break
W30/39 10 Summer term

The summer term is optionally free of lectures, then this is a 30-week plan that would probably start the academic year in W40 or W42 with “Fall break” or “Fall term”, respectively.