In the bridging segment of "Spring Break Adventure", Indy reads an edition of "The New York Times". Using my DVD player's zoom function, the date on the front page can be identified as: Saturday, February 26, 1916
Googling a 1916 calendar confirms that the 26th was, indeed, on a Saturday but the real date doesn't correlate with the dialogue. At school, Indy tells Nancy that he leaves "tomorrow". While reading the newspaper at home, his dad says, "We're leaving at 6AM…I'll see you in the morning." so it's supposed to be taking place a few hours later that same day.
A) Indy was reading last week's paper.
B) There was school on a Saturday!
Ridiculously trivial, I know, but thought it was fun to point out for fellow timeline freaks!