Interesting morning for moi today. Up at 4:45AM, shower, shave, shit and out the door to Seatac International flight for a 6:25 flight to see old Emmett Klocker in Minneapolis. We got a big day planned and the early morning flight gets me there at 11:35. Get to the airport, park and roll into the line to get my seat assignment. After 15 minutes waiting for some help, roll up to the desk jockey, hand him my confirmation and licence. Dude looks up and goes "uhhhh, your here a little early buddy. Your ticket says P.M. not A.M." Uhhh, yea.
The abbreviation a.m. for Latin ante meridiem, meaning “before noon,” refers to the period from midnight until noon. One minute before noon is 11:59 a.m. One minute after noon is 12:01 p.m. Many people distinguish between noon and midnight by saying 12 noon and 12 midnight. Expressions combining a.m. with morning (6 a.m. in the morning) and p.m. with afternoon, evening, or night (9 p.m. at night) are redundant and occur most often in casual speech and writing. Both a.m. and p.m. sometimes appear in capital letters, especially in printed matter.