Homonym: Post Meridiem (Afternoon)
"Post Meridiem," often abbreviated as PM, refers to the time period from noon to midnight in the 12-hour clock system. The term is derived from Latin, meaning "after midday." It is used to distinguish the afternoon and evening hours from the morning hours, which are labeled as AM or "Ante Meridiem," meaning "before midday."
In everyday usage, PM is commonly seen in schedules, timetables, and digital clocks to indicate times such as 1:00 PM or 6:30 PM. This system helps people organize their daily activities, ensuring clarity in communication regarding time.