Thing I just realized

If Howard and Maria Stark died on December 16th, 1991, and the opening shots of Tony in his workshop take place on the night of December 18th/very early in the morning December 19th, then when JARVIS says, “Sir, may I remind you that you’ve been awake for nearly 72 hours,” he’s saying that Tony hasn’t been able to sleep since the anniversary of his parents’ deaths.