Hand washing. Hand washing, also spelled handwashing and known as hand hygiene, is the act of cleaning one's hands for the purpose of removing soil, dirt, and microorganisms. This may be done with or without the use of water, other liquids, or soap.
Sunscreen does expire. The molecules in suntan lotion (such as homosalate and octyl salicylate) block the penetration of UV radiation by acting as filters and absorbing and reflecting high energy UV. Over time these molecules break down and lose effectiveness, kind of like expired cold medicine or vitamins.
Task scheduler ignoring expire field of trigger. I've set up a task to run a simple command (rundll32.exe with some parameters) on Windows 7. The task is triggered by workstation unlock, has an expire time/date (checked=active), and is enabled. I set the expire time to be 11:25 Aug 1 2012, the current time being 11:20 Aug 1 2012, and locked the workstation, then unlocked it. The evnt triggered fine.