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noon
12:20 PM
Meridian is the Latin word for Noon. Ante Meridian (AM) means before noon, and Post Meridian (PM) means after noon.
It's a reference point. The sun is highest in the sky at 12 noon. knowing that you can work out how far away from the prime meridian you are if you have an accurate clock.
11:56 AM
noon
The term "meridian" means "midday" or noon.The original definition of the Prime Meridian placed it at the "center" of the day, or noon, when the Sun could be determined as "directly overhead" at some point along the 0° meridian. This meant that midnight, the division between days, was at the 180° meridian, or "International Date Line", when it was noon in Greenwich. At that point, all points on the globe are marking the same calendar day.Because the Sun arrives overhead earlier east of the Prime Meridian, the time there is already after noon that day. Points west of the Prime Meridian will have their noon later that day, so they are "earlier" in the day.The terms "ante meridiem" (A.M. before noon) and "post meridiem" (P.M. after noon) follow the same convention. When it is afternoon at the Prime Meridian, a new day begins at the Date Line and "moves west" with the passing hours. Except at midnight, the Date Line will indicate a "day later" to its west than to its east.
12:20 PM
An Anti-Meridian is a meridian opposite any given meridian of longitude.Specifically the Anti-Meridian is the 180th meridian. That is the meridian opposite of the Prime Meridian.The term Anti-Meridian is sometimes confused with Ante Meridiem.Ante Meridiem is latin for before noon. Usually shown in English as "a.m.". Similarly, post meridiem, after noon, is shown in English as "p.m.".
The initials a.m. stand for ante meridian, Latin for "before noon." The initials p.m. stand for post meridian, Latin for "after noon."
Midnight.
Meridian is the Latin word for Noon. Ante Meridian (AM) means before noon, and Post Meridian (PM) means after noon.
No. The "Prime Meridian" (Greenwich Meridian) is 0° longitude and runs through Greenwich, England, western Europe, and Africa. The International Date Line is on the other side of the world, at 180° longitude (east or west is the same line), and marks the start of each new calendar day. It is midnight at the Date line when it is noon at the prime Meridian. The actual line has detours to accommodate Russia, the Aleutians, and New Zealand.
It's a reference point. The sun is highest in the sky at 12 noon. knowing that you can work out how far away from the prime meridian you are if you have an accurate clock.
"Meridianus" is Latin for "noon"; the phrases mean after noon and before noon.
11:56 AM
Ante Meridian: before noon - am Post Meridian: after noon - pm