to someone it must...
marquee matchup matters how? TV games are announced 11 days out... period.
FCS? D-II? Does it matter? Gardner Webb at Ohio is not a marquee matchup for a national tv audience.
It matters for people who have jobs that require work on weekends who have the desire to schedule around them to be at a game. While I don't work Saturday's, my wife does.
I'm pretty sure for basketball that it's 21 days, which is where I grabbed that number from.