Another corollary of Murphy's law: the closer you come to a planned vacation, the more likely a sudden project appears at work to consume all your time up to your departure date. This is the third year in a row for me.
The past two years, I worked until 2-4am that morning. This year I was on track for 6 pm, but when a key resource called in sick, it bacame 9 pm the night before. Still, better than the prior two years.