question: is the time +12 hours or -12 hours in the opposite part of the world?
comment: Timezones are very confusing my man I feel you. I say we get rid of them and just all keep one time. Back to your question though. Two things are important to answering your question: the direction of rotation of the Earth/its shadow, and the international date line. We all know the Sun rises and the East and sets in the West, so one could make a logical step to say that people that see the Sun before you (East of you) are living in a timezone before yours. In other words, clocks to the East will always be ahead of yours. This is true in all except one place, at the international date line located between Asia and the Americas in the Pacific. To avoid confusion, cut the globe on this line (quickly) and imagine laying the world flat with the Americas to the West and Asia to the East (like you always see it.) Now you can’t think about it too too hard, but that sheet now represents a day and it works perfectly if you remain static. If you were to cross the line, however the day changes. Let’s say you are watching the sunrise just to the Americas’ side of the date line. You would see the Sun rise up, and that’d be the beginning of your day 1. Just by crossing the date line, suddenly you’d now be at the start of Australia or New Zealand’s day 2. It sounds very strange I know but this is required to make timezones work. Back to the question now that we have the basics. Let’s say you are in Germany. The opposite side of the world for you might be slightly off the coast of California. Because you haven’t crossed the date line you can suppose that their clocks are 12 hours behind yours. (so 0300PM to 0300AM)(1500 to 0300.) Now lets say you want to go from the middle of Canada to somewhere in Southern Asia. There are two ways to do this. The simpler way would be to think to your self that you want to remain on one day, so crossing the date line is not allowed. In that case you’d have to go East and add time, +12hrs. The other way to do it is to always travel Westbound when doing your math subtracting time as you go on, then add 24hrs the instant you cross that perplexing date line.
passages: This series and the next one were originally aired on Wednesdays in the "Daytime on Two" strand at 10:25am; this series also premiered after a rerun of the second one finished, and the next one premiered when "Daytime on Two" returned after a two-week Easter break.
  
  BULLET::::- Episode 16: "Up, Down, On, and Off" (28 February 1996)
   The first two episodes of this series were, again, originally aired as part of the "Daytime on Two" strand on Mondays at 9:45am, but 8 May 1995 was the year's May Day, so its third episode was aired the following day; the last two episodes were also aired on Mondays.
  
  BULLET::::- Episode 11: "Circles" (24 April 1995)
   A sundial uses a gnomon to cast a shadow on a set of markings calibrated to the hour. The position of the shadow marks the hour in local time. The idea to separate the day into smaller parts is credited to Egyptians because of their sundials, which operated on a duodecimal system. The importance of the number 12 is due to the number of lunar cycles in a year and the number of stars used to count the passage of night.
   Attention must be drawn to the time 02:00. It is written as () but is almost always read as (). The number two, (), takes the form of () when followed by a measure word, in this case, (). Note that this does not apply to either 12:00. Noon is (); (); or (). Midnight, on the other hand, is () or ().
   As with the Egyptian night and daytime hours, the division of the day into twelve "shi" has been credited to the example set by the rough number of lunar cycles in a solar year, although the 12-year Jovian orbital cycle was more important to traditional Chinese and Babylonian reckoning of the zodiac.
  
  Section::::History.:Southeast Asia.
   Camping was not precise about the timing of the event, saying that "maybe" we can know the hour. He has suggested that "days" in the Bible refer to daylight hours particularly. Another account said the "great earthquake" which signals the start of the Rapture would "start in the Pacific Rim at around the 6 pm local time hour, in each time zone."
   If XII is not at the top of the dial, or if the numbers are Arabic rather than Roman, then the time may be shown in Italian hours (also called Bohemian, or Old Czech, hours). In this system, 1 o'clock occurs at sunset, and counting continues through the night and into the next afternoon, reaching 24 an hour before sunset.
  
  In the photograph of the Prague clock shown above, the time indicated by the sun hand is about noon (XII in Roman numerals), or about the 17th hour (Italian time in Arabic numerals).
  
  Section::::Generic description.:Calendar and zodiac.
   The clock and split-screen style in "24" has also been parodied in the anime "Lucky Star"; in episode 17, Sojiro (Konata's father), Yui, and Yutaka are making a birthday party for Konata, and subsequent scenes mimic this style. The clock/split-screen style was also in the 100th episode of "Keroro Gunsō".
   For the time being, I'm three heads and eight arms [of an Asura fighting demon].
  
  For the time being, I'm eight feet or sixteen feet [a Buddha-body while seated or standing].
  
  For the time being, I'm a staff or a whisk.
  
  For the time being, I'm a pillar or a lantern.
  
  For the time being, I'm Mr. Chang or Mr. Li [any Tom, Dick, or Harry].
  
  For the time being, I'm the great earth and heavens above. (tr. Waddell and Abe 2001: 48) /poem
   BULLET::::1. Rat (Yang, 1st Trine, Fixed Element Water): Rat years include 1900, 1912, 1924, 1936, 1948, 1960, 1972, 1984, 1996, 2008, 2020, 2032. The Rat also corresponds to a particular month in the year. The hours of the Rat are 11pm – 1am.
  
  BULLET::::2. Ox (Yin, 2nd Trine, Fixed Element Earth: Ox years include 1901, 1913, 1925, 1937, 1949, 1961, 1973, 1985, 1997, 2009, 2021, 2033. The Ox also corresponds to a particular month in the year. The hours of the Ox are 1am – 3am.
   BULLET::::- Two columns have 10 dials each. The bottom eight dials show the time in different major cities around the world, including New York and San Francisco, though without adjustment for daylight savings time, which did not exist at the time the clock was built. The two top dials on the left column show the number of solar and lunar eclipses in the current year. The two dials on the right column show the leap years and leap centuries. The hand on the leap century dial moved for the first time in 2000; it will move for the second time in 2400.
   Compare to Cantonese Chinese term "dyun eng" (which is duan wu in Mandarin Chinese) ngo/eng/wu all refer to the ancient Chinese calendar term: the seventh of the twelve Earthly Branches, which was a component for determining time based on a series of 60 years (just as today we refer to 100 year periods as centuries).) Ngo/eng/wu refers to the sun at noon.
  
  Section::::Traditions.
   Section::::Just In Sequence is Just In Time.:Introduction of JIS concepts.
   The setting of Fred Hoyle's "October the First Is Too Late" (1966) is similar to that of Leinster's story, except that the segments of Earth which are brought together and interact with each other are from different historical periods, rather than from different parallel histories. 
   The molad amiti (real "molad"), which has no relevance to the Hebrew calendar, is the time at which the actual astronomical lunar conjunction occurs, often expressed either as the mean solar time in Jerusalem (Universal Time + 2h 20m 56.6s or simply + 2h 21m) or as the clock time in Israel. If the moment is desired for ritual or social purposes then it may be best to express it in terms of the local clock time.
   Tevet
  
  Section::::Gregorian new year.
  
  The Gregorian New Year's Day (1 January) nearly always occurs in this month. Only rarely will it occur in either of the two neighbouring months (Kislev or Shevat).
  
  Section::::Holidays in Tevet.
  
   25 Kislev – 2 Tevet – Hanukkah (or 3 Tevet if Kislev is short)
  
  10 Tevet – Tenth of Tevet (Asara beTevet), a fast day
  
  Section::::Holidays in Tevet.:Community holidays.
  
  BULLET::::- 5 Tevet is celebrated as a holiday by Chabad Hasidim, commemorating the 1984 verdict concerning an inheritance claim on the books of Rabbi Joseph Isaac Schneersohn.
  
  Section::::Tevet in Jewish history and tradition.
   Section::::Plot.:Story.
   Within the 24-hour clock system used for official and technical purposes throughout most of the world, there is a time that could be called "13 o'clock". However, the 24-hour system only came into widespread use in the 20th century, and most analogue clocks (including virtually all chiming or striking clocks) still work on the 12-hour system. A striking clock rings a bell once for each hour of the time. One ring is 1 o'clock, two rings is 2 o'clock, three rings is 3 o'clock, etc. Traditional clocks that strike a bell only mark 12 hours. After the twelfth hour with the twelve rings of the bell then the next hour should be with one ring only, indicating 1 o'clock. Accordingly, with very rare exceptions, when a clock rings thirteen times it is indicating an impossible time and that the clock is not functioning correctly. A children's riddle asks "What time is it when the clock strikes thirteen?" The answer is "Time to get a new clock!"
   Times Without Number
  
  Times Without Number is a time travel/alternate history novel by John Brunner.
  
  Section::::Publication history.
  
  Originally Brunner wrote three stories published in 1962 in consecutive issues of the British magazine "Science Fiction Adventures": "Spoil of Yesterday" in No. 25, "The Word Not Written" in No. 26, and "The Fullness of Time" in No. 27.
  
  In the same year, a considerably different version appeared as a fix-up novel under the title "Times Without Number", which was published as an Ace Double together with "Destiny's Orbit" by David Grinnell (Donald A. Wollheim).
   BULLET::::- Episode 30: "Days of the Week" (20 January 1998)
   Similarly to the usage of the traditional Japanese clock, each hour of a day-night period was divided into 12 double-hours, each of which corresponding with one of the twelve signs of the Chinese zodiac, with similar symbolic motif and astrological significance. The first of the twelve double hours encompasses midnight, at the middle of the double hour, corresponding with 11:00 p.m. to 1:00 p.m., with midnight being the midpoint of the first double-hour. The animals in the hourly sequence are the same and in the same order as in the yearly sequence. The Pig is the last in the sequence, corresponding to the double-hour 9:00 p.m. to 11:00 p.m., also known as the hour "hai" (亥). 
   Both the 12-hour and 24-hour notations are used in spoken and written Chinese. To avoid confusion, time on schedules and public notices are typically formatted in the 24-hour system, so the times and are understood to be 12 hours apart from each other. Spoken Chinese predominantly uses the 12-hour system and follows the same concept as A.M. () and P.M. (). However, these clarifying words precede the time. For example, 19:45 would be written as ("after noon seven hours forty-five") or ("after noon seven hours forty-five minutes"). Time written in the 24-hour system can be read as is, so is read as .
   Section::::Plot.
  
  Section::::Plot.:Characters and setting.
   Time can alternatively be expressed as a fraction of the hour. A traditional Chinese unit of time, the (), was 1/96 of the 24-hour day, equivalent mathematically to 15 minutes and semantically to the English "quarter of an hour". A quarter-after is thus () or (). A quarter-to is (), or more commonly, (). "At the half-hour" is described using (), which means half.
  
  BULLET::::- 6:45
  
  BULLET::::- or
  
  BULLET::::- :15
  
  BULLET::::- :30
   In the modern 12-hour clock, counting the hours starts at midnight and restarts at noon. Hours are numbered 12, 1, 2, ..., 11. Solar noon is always close to 12 noon (ignoring artificial adjustments due to time zones and daylight saving time), differing according to the equation of time by as much as fifteen minutes either way. At the equinoxes sunrise is around 6 a.m. (, before noon), and sunset around 6 p.m. (, after noon).
  
raw_presuppositions: It is +12 or -12 hours on the other side of the world.
raw_corrections: The time difference depends on which direction you travel around the globe and resets at the international date line. 