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Geschichte und Verwendung/span>
A 12-hour watch is a time conventions in which the 24 hour days are subdivided into two periods: a.m. ((from Roman dialect hourly meridian, translated until, before noon) and p.m. ( from Roman dialect hourly meridian, translated until, after noon). Every cycle has 12 numbers of hours: 12 (as zero),1, 2, 3, 3, 4, 5, 6, 7, 8, 9, 10 and 11.
Daytime 24-hour cycling begins at 12 o'clock (can be specified as 12 o'clock), lasts until 12 o'clock (can be specified as 12 o'clock) and lasts until 12 p.m. at the end of the workday. Clocks for 12 hours were invented from the mid-twentieth century before Christ to the sixteenth cent. after Christ.
This 12-hour time agreement is customary in several English-speaking and former UK settlements as well as in some other states. This 12-hour watch can be dated back to Mesopotamia and ancient Egypt. The grave of Pharaoh Amenhotep I contained both an Egypt solar watch for daily use and an Egypt watch for overnight use. Dated around 1500 B.C., these watches split their periods of use into 12 each.
Romans also used a 12-hour clock: sunlight was subdivided into 12 identical times (i.e. times of different length throughout the year) and nightlight into four different times. When the first mechanic timepieces of the fourteenth centuries had watch faces at all, they showed every 24h, used the 24h analogue watch face, affected by the astronomers' intimacy with the Astrolabium and the solar timepiece and their wish to sculpt the Earth's seeming movement around the Sun.
For Northern Europe, these faces generally used the 12-hour numeration system in Romans, but showed both a.m. and p.m. consecutive years. Known as the Dual XII system, it can be seen on many preserved watch faces, such as Wells and Exeter. In other parts of Europe, particularly Italy, numeration was more likely to be 24-hour (I to XXIV), which reflects the way Italy counts time.
A 12-hour watch was used throughout the entire UK empire. In the course of the fifteenth and sixteenth century, the 12-hour analogue face and time system slowly gained a foothold as the general public's standards throughout northern Europe. This 24-hour analogue watch face was reserved for special uses such as astronomic watches and Chronometer.
Today, most analogue timepieces use the 12-hour face, on which the short watch hands turn once every 12hrs and twice a 24hrs. A number of analogue faces have an inner number ring together with the 1 to 12 ring numbers that come as part of the series. These modifications make it possible to display the watch in 24-hour inscriptions.
You can find this type of 12-hour watch in those states where the 24-hour watch is used. The 12-hour time system is the predominant system of oral and literary time in several different states, especially in those that were part of the former British Empire, such as Great Britain, the Republic of Ireland, the United States, Australia, New Zealand, India, Pakistan, Bangladesh, Malaysia and others, as well as Egypt, Mexico and the former US Philippines settlement.
However, in most jurisdictions, the 24-hour system is the default system, especially for typing. A number of European and Latin American economies use a mixture of both, favouring the 12-hour system in slang, but using the 24-hour system in script and context. A 12-hour watch in speeches often uses sentences like .... in the mornings,... in the afternoons, ... in the evenings and... at nights.
A. m. and p. m. (often spelled "am" and "pm", "AM" and "PM", or "A. M." and "P. M.") are used in English and Spanish. Admittedly, lunch is hardly ever shortened in one of these tongues, as it is normally completely composed.
In most other tongues there are no official abreviations for "before noon" and "after noon", and their user uses the 12-hour watch only verbally and informal. If, for example, one travels to work at "9:00 am", 9:00 am, this may be implicit, but if a ball is to begin at "9:00 am", it may begin at 9:00 pm. The words "a.m." and "p.m." are acronyms of the Latin word anal meridiem meaning before lunch and after lunch.
According to the Styleguide used, the acronyms " a. m." and " p. m." are spelled differently in lower case characters ("am" and "p. m."), upper case characters without a dot ("AM" and "PM"), upper case characters with dots or lower case characters ("am" and "p. m." or, more generally, "a. m." and "p. m."). It is recommended that a. m. and p. m. not be used without lead time, although this may be useful when discussing an incident that always occurs before or after midday.
Some use a double point, others a dot (dot), and still others use the character h. In many cases, the 24-hour watch does not have a delimiter between lessons and lessons (0800, as typed, i.e. "oh-eight-hundred"). You can express minuses as the precise number of microns after the time of the lesson (for example, 18:32 is "thirty-six-two").
If time is expressed with the phrase "past (after)" or "to (before)", it is common to select the number of minute under 30 (e.g. 18:32 is usually "twenty-eight to seven minutes" instead of "thirty-two after six"). Full lessons in conversational English are often indicated by the clock followed by the whole lesson (10:00 a.m. as ten a.m., 2:00 a.m. as two a.m.).
The minutes ":01" to ":09" are normally expressed as oh one to oh nine (zero or zero can also be used instead of oh).
Twelve noon[a]twelve noon Japan Law Convention[doubtful - discuss]0:00 noon 12:00 noon 12:00 noon 12:00 noon 12:00 noon 23:59 noon ^ a business d e These style are unclear whether it' s the middle of the night at the beginning or end of each workday. It' not always clear what the 12:00 and 12:00 hours mean.
Out of the roman words meridies meaning lunchtime, before and after, the word means before and after lunchtime. As " Mittag" (Mittag - Meridien - m.) is neither before nor after itself, the words a.m. and p.m. do not work.
2 ] Although "12 m." has been proposed as a means of indicating midday, this is rarely the case and does not solve the issue of how to indicate Midnight. A lot of US stylesuides and the NIST website "Frequently asked Questions (FAQ)" suggest that it is most obvious to refer to "noon" or "12:00 noon" and "midnight" or "12:00 noon" (and not to "12:00 noon" and "12:00 noon").
" In the Associated Press Stylebook it is stated that 12:00 "is a part of the daily that ends, not the one that begins. "According to the AP theory, "Midnight Friday" appears one minute after 23:59 on Friday, not one before 12:01 on Friday. As the Canadian Press Stylebook says: "Write at midday or noon, not midday or midday.
The website of the British National Physical Laboratory "FAQ-Time" states: "In cases where the placement of a particular incident is not reliable in contexts, the couple of dates extending over 12 o'clock may be cited"; also "the concepts of 12.00 o'clock and 12.00 o'clock should be omitted. "<font color="#808080">SHARLA: " <font color="#808080">SHARLA: "Time". "Use of AM or PM to mark midday or middlenight may lead to confusion.
In order to denote midday, either the term midday or 1200 or 12 sts should be used. In order to denote Midnight without creating ambiguities, the two data between which they lie should be given, unless the 24-hour quotation is used. Thus you can write midnight: Take a stroll through time - Water clocks filed on May 31, 2008 at the Wayback Machine.
"It'?s a good way to adjust how the time is shown in Windows." United States Government Printing Office Style Manual". <font color="#ffff00" size=14>a> ; "U. S. Government Printing Office Style Manual" (PDF) ^ a. Seite 156. Chicago Manual of Style (17th edition).
Even though midday can be pronounced as 12:00 meters (m = meridians), very few use this shape. Richards, z. B., Mapping Time : the Kalender Richards, z. B., Mapping Time : the Kalender and its Geschichte (Oxford University Press, 1999), 289. New edition of the GPO Style Manual - Giovinfo www.govinfo.gov.