[DoodleBob]

Hence, there is a two year window for SC retirees/deaths that Trump would be appointing their replacements.

I calculate 19 months.

After Scalia died in Feb 2016, Yertle blocked any hearings on Scalia's replacement pending the outcome of the general election. If anyone retires etc after Jan 1, 2020, I expect Swamp dwelling McConnel to say "well, in fairness to the Democrats, I will block hearings until Jan 20, 2021."

Thus, the politically likely window for retirements etc is the next 19 months.

[ClayinVA]

The current term is over in June, normally any retirements are announced on the last day.