According to the Associated PressStyle time of day, the time descriptors "ante meridiem" (before noon) and "post meridiem" (after noon) should be shortened with lowercase letters and periods (a.m. and p.m.).
Ante means before in Latin, and ante meridiem is used to indicate that a statement applies before noon. Post means after in Latin, and post meridiem is used to indicate that a statement applies after noon. Thus, ante meridiem and post meridiem are the only correct ways to write this phrase.
The word meridiem comes from the Latin words for midday, which are mero diem. Thus, ante meridiem and post meridiem mean before midday and after midday, respectively.
In English, we often omit the word late when referring to afternoon hours, so "in the afternoon" can be written as simply "pm". But in Latin, the word is late, which makes these phrases correct: ante meridianum and post meridianum.
Also note that meridianum is an adjective meaning "about midday". So, these other phrases are also correct: ante meridie and post meridie.
The terms ante meridiem (a.m.) and post meridiem (p.m.) are derived from the Latin words meridies (midday), ante (before), and post (after). "By tradition, 12 AM represents midnight and 12 PM denotes noon," according to the American Heritage Dictionary of the English Language.
These terms are used to describe the time of day. Anything written before or after these times should be changed to a.m./p.m. Ex. : 3:10 PM; 4:15 A.M.
AP means after proper prayers of introduction, and PM means before proper prayers of dismissal. These are the most common uses of these terms in Catholic churches.
However, there are other uses for these terms in church life. An apostle is a missionary priest or bishop who has been assigned responsibility for a region. An apostle is one of the twelve original disciples of Jesus Christ who were given authority to spread Christianity among other nations. There are many apostles today, both male and female. Prophets are people who receive divine messages through inspiration of the Holy Spirit. They are able to communicate these messages either directly or through others. The term "apostle/prophet" can be used interchangeably with "missionary" or "pastor". Catholics believe that Peter, James, John and Paul were all prophets and apostles at the same time.
The acronyms a.m. and p.m. stand for the Latin words ante meridiem and post meridiem, which imply before and after midday, respectively. These terms are used to indicate the hours between sunrise and sunset or sunup and sundown, depending on how you view it.
Throughout history, people have used the phrase "a.m. or p.m." to describe something that happens either early in the day or late at night. The first part of the sentence indicates whether you are talking about morning or evening, while the second part describes what kind of activity this is: "a crime against society" or "a breach of faith."
These phrases came into use when there was no way to measure time other than by looking at the sky. By observing how long it took for the sun to rise or set, you could estimate how many hours were left until dusk or dawn. You would say that some event will take place "a little after sunrise" or "around midnight," for example.
In modern times, we can use clocks to tell us what time it is, so these old phrases are no longer necessary. But they are still widely used in writing and speech as a way of indicating an action that takes place in the early morning or late at night.
AM, am, a.m., or A.M. are frequent abbreviations for ante meridiem; PM, pm, p.m., or P.M. are typical abbreviations for post meridiem. Timeanddate.com, like many other sites, uses am and pm, although the other variations are as accurate and extensively used. What exactly is solar noon? When does the sun rise and set? These questions have simple answers based on where you are located in the world and what time of year it is. Solar noon is the name given to the point in the day when the sun is at its highest altitude above the horizon. It's usually around 12:00 PM or so, but it can vary depending on how far north or south you are along with any other factors such as clouds, sunlight filtering through trees, or anything else that may block out some of the sky. The sun will begin to rise and set shortly after solar noon and early morning and late evening, respectively.
Solar noon is important to understand because it influences when most plants and animals awake and sleep. Animals need light during part of the day for them to be active. This is why dogs and cats need to be let out during daylight hours - so they can sleep in during the dark parts of the day. In fact, humans need sunlight too! We make vitamin D when exposed to sunlight, which is necessary for our bodies to function properly. If you don't get enough sunlight, you'll likely become sick and/or develop diseases.
The abbreviation AM (ante meridiem) means "before noon," hence it refers to the morning. PM (post meridiem) is Latin for "after noon," hence it refers to any time after noon. Therefore, AM and PM mean the same thing: in the morning.
However, use of these terms does vary between languages and cultures. In English, we usually refer to the morning as "AM" and the afternoon as "PM". But in French they are le matin and le soir respectively. And in Spanish they are la mañana and la tarde respectively. So when writing about times of day in other languages you must be aware of these differences.
In Hindi language the words for morning and evening are different. They are Sankalpa and Shukla paksha respectively. So in this case "AM" and "PM" would both translate to "Sankalpa."
Finally, in Arabic the words for morning and evening are also different. They are Al-Shafar and Al-Thani respectively. So here again "AM" and "PM" would both translate to "Al-Shafar."
These various usages of the term "AM" and "PM" show that there is no single fixed definition for these words anywhere in the world.
Ad meridiem The acronyms a.m. and p.m. stand for the Latin words ante meridiem and post meridiem, which imply before and after midday, respectively.