Trying to look at comps from last year to see effect of CFB championship game, and I realize there are too many Monday holidays in these months, it difficult to pull a trend.
But looking at Mondays last year, Jan 10 (CFB) and Jan 24, (Jan 17 being MLK), the drops look fairly similar between the days.
I don't know how much the popularity of CFB ebbs and flows year-to-year though, or if this year was a more popular game.