am and pm meaning

What does am and pm mean? The 12-hour clock divides the 24-hour day into two periods. and i love her kurt cobain am stands for the Latin ante meridiem, translating to "before midday" This is the time before noon pm stands for post meridiem or "after midday" – the time after noon Noon is therefore neither 'ante' (am) nor 'post' (pm) meridiem Midnight is also neither