Boston MA is twice a month (depending on the neighborhood, usually something like the 2nd and 4th Wednesday, but only usually one side of the street, the other

Boston MA is twice a month (depending on the neighborhood, usually something like the 2nd and 4th Wednesday, but only usually one side of the street, the other side would be 1st and 3rd) from April 1 to Nov 30. Signs are posted, but usually 6am-8am and it's a tow zone for that period! so don't leave your car parked on that side or they WILL tow it.