AM means before noon. This is the 12-hour period from midnight to noon. PM means after noon. It covers the 12 hours from noon to midnight. Using numbers from 1 to 12, followed by am or pm, the …

am, pm or a.m., p.m. Although both versions shown in the title (small capitals, unpunctuated— am, pm —and lowercase, punctuated—a.m., p.m.) are standard, the latter tends to be stylistically preferred …

Apr 21, 2026 · AM covers the period from midnight up to noon. PM covers the period from noon to the next midnight. The 12-hour clock divides the day into two cycles of 12 hours each. Instead of …

Originally there were two cycles: one cycle which could be tracked by the position of the Sun (day), followed by one cycle which could be tracked by the Moon and stars (night). This eventually evolved …

AM and PM are the abbreviated terms for Ante Meridiem and Post Meridiem respectively. While AM represents the time from midnight to 11:59 noon, and PM represents the time from 12 noon to 11:59 …

The 24-hour clock is a method of telling the time in which the civil day runs from midnight until next midnight. The following numbers (used once in the same civil day) of hours are: 0, 1, 2, 3, 4, 5, 6, 7, …

When emphasizing an exact or precise time, the abbreviations “a.m.” and “p.m.” are used. These two abbreviations stand for the Latin terms “ante meridiem” and “post meridiem,” which literally mean …