Про стандарт ISO

VictorSmirnov 14.10.2003 17:24

Смотрим http://www.cl.cam.ac.uk/%7Emgk25/iso-time.html
там черным по белому написано
Theorem: Possible ISO week numbers are in the range 01 to 53. A year always has a week 52. (There is one historic exception: the year in which the Gregorian calendar was introduced had less than 365 days and less than 52 weeks.)

В чем же моя ошибка?!

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