How to Know the Day of the Week of Any Date
(a)adatethatfallsonthelastworkingdayoftheweekaftertheweekinwhichthespecialresolutionispassed;or(b)iftheperiodbetweenthedatein ...,TheweekofMay10thmeansthewholeweekincludingthatdate.NormallyyouwouldusetheMonday(whichMay10,2021is)toidentifytheweek....。參考影片的文章的如下: