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 12-hour clock system identifies all 24 hours of the day.

In particular, AM stands for ante meridiem, which translates into English as ‘before midday’. Meanwhile, PM is post meridiem and means in English ‘after midday’. These abbreviations are used to identify the time in the 12-hour clock format instead of using 24 hours.

P.M. definition: 1. used when referring to a time in the afternoon or evening or at night: 2. abbreviation for…. Learn more.

As a kid, I always thought “at morning” and “post morning.” But actually, the appreciated term A.M. stands for “ante meridiem,” which is a Latin term for “before noon.” It’s used to indicate that a time is in the morning, before 12:00 p.m. (noon). We also know it as the hour after midnight.

2019年10月3日 · P.m. is an abbreviation of post merīdiem, meaning—you guessed it—“after midday.” These two terms help keep ambiguity at bay in the 12-hour time system. What does m. mean? There is a third, lesser-known abbreviation in this system: m. From the Latin merīdiēs (“midday”), it means “noon.”

P.M. definition: 1. used when you are referring to a time after 12 o'clock in the middle of the day, but before 12…. Learn more.

The meaning of AM and PM is ‘Ante Meridiem’ and ‘Post Meridiem’, which means before noon or midday. We associate P.M. with the afternoon and evening. P.M. is an abbreviated term for ‘Post Meridiem,’ which implies afternoon or after midday.

2024年10月16日 · Abbreviation of post meridiem ("after noon"). p.m. (used after the hour) In the 12-hour period from noon to midnight (the latter half of the day) when using the 12-hour clock.

The abbreviation p.m. stands for the Latin phrase post meridiem, which means “after noon.”

2025年3月19日 · 6 PM corresponds to 6 pm or 6 o’clock in the evening. You should be particularly careful with midnight (12 AM) and midday (12 PM) to avoid misunderstandings. The PM AM time notation may seem complicated at first. But it is easy to learn with practice. It offers an alternative way of telling the time and is very important internationally.