What does am and pm stand for
AM stands for Ante Meridiem and PM stands for Post Meridiem. Furthermore, Ante Meridiem means before midday (before Noon) and Post Meridiem means after midday (after noon).
M stands for meridian
When used to designate time, a.m. means ante meridiem, which is Latin for before noon. Post meridiem, which is Latin for after noon is abbreviated as p.m.
AM Is morning PM is after morning