Even as recently as right up til I retired in 2018, here in NorCal we got our birthday and the day after off. We also got 2 "floating holidays" that could be taken at any time after our anniversary date. Somewhere in the late 90's, probably during the strike contract, we negotiated that you could still take them that way, separated, or choose to combine them, and UPS included the 5th day off, creating what was called your second "option week." If you didn't combine them, you were only getting the 4 paid days off. Downside, it was picked with the regular vacation bids, vs. having your birthday days off guaranteed, regardless of whether it fell in December or not. I always took it as an option week. So when I crossed 30yrs of service, I was getting 7 regular weeks + 2 option weeks vacation a year. 9 weeks a year, can't beat that, other than what I've got now...every day is Saturday!