The background reasons for still observing ???-??? ??? is as obsolete as the background reasons for still having ????-???, because the respective reasons are no longer applicable, yet both ????? have remained in force, and we simply have to continue complying with them.
On another more frustrating note, for both working people & college students:- during the forthcoming year of ???”? both ???-????? & ?????? shall be on a Wednesday, and both times the Monday 2 days before shall be a legal holiday:- Columbus Day & Memorial Day respectively, yet both time then the next day:- 1st working day of that week shall already be ??? ???-??? when have to utilize vacation time, & yet cannot change the legal holiday.
Good luck to 770 arranging Labor Day and the West Indian Parade during 2021 & 2032, when Labor Day shall be ??? ???-???? & First Day ???-???? respectively.