Silent treatment - What kind of Monday is this?

Mondays are usually a zoo; everybody wants everything from everybody and messages fly all over the place the whole day long.  Today, the phone did not ring once today.  About 25% of the usual email traffic, most easily ignored, popped up in the inbox.  Not one single knock on my office door.  Saw nary a soul in the hallway.  Emerged from the book work only to make a trip to my lab, and the men's facilities.  These are rare days in my business.  Thank you spring break!