parse times more sensibly

[jameysharp]

If someone says set time 3:00, they probably don't mean 3am.

I'd suggest accepting times like (\d+)(:\d\d)?\s*(am|pm)?, case insensitive. If the meridian marker (am/pm) is missing and the hour is less than, say, 8? then treat it as after noon.

If someone wants an early morning event, they can explicitly specify "AM". If they wrote "8:00" and expected it to be in the evening, they can use "8pm" to get what they wanted.