Difference between revisions of "Arean calendar"

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The [[Arean calendar]] is a distant variant of the [http://pweb.jps.net/~tgangale/mars/mst/darian.htm Darian Calendar] that has been adopted in the early [[22nd century]], with some notable differences.
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The [[Arean calendar]] is a distant variant of the [http://pweb.jps.net/~tgangale/mars/mst/darian.htm Darian Calendar] that was adopted in the early [[22nd century]] by the various people of [[Mars]].
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* [http://ss.anenris.com/resources/calendar.html Solar Storms Calendar Converter]
  
 
== Mechanics ==
 
== Mechanics ==
 
The [[Martian]] epoch begins as with the Darian Calendar, on March 11th, 1609 [[Earth]] ([[Gregorian]]) time, Midnight GMT, as 'year 0'.
 
The [[Martian]] epoch begins as with the Darian Calendar, on March 11th, 1609 [[Earth]] ([[Gregorian]]) time, Midnight GMT, as 'year 0'.
  
Timekeeping on [[Mars]] makes use of the 'extended second', which is 1.027491251041666... seconds long.  This preserves a 24-hour '[[sol]]'.  Typically, many use the terms 'second', 'minute', 'hour', 'day', 'week', and 'month' interchangibly, though when accuracy is noted, standard seconds are assumed.
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Timekeeping on [[Mars]] makes use of the 'extended second', which is 1.027491251041666... seconds long.  This preserves a 24-hour '[[sol]]'.  Typically, many use the terms 'second', 'minute', 'hour', 'day', 'week', and 'month' interchangeably, though when accuracy is noted, standard seconds are assumed.
  
 
=== [[Sol]] ===
 
=== [[Sol]] ===
A day on [[Mars]] is sometimes called a [[sol]], primarily to differentiate it from the term 'day' on [[Earth]].  Because of the extended second, a [[Martian]] day still has 24 hours, each with sixty minutes, each with sixty seconds.
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In [[Earth]] time, a [http://pweb.jps.net/~tgangale/mars/faq.htm#day sol] averages 24 hours, 39 minutes and 35.24409 seconds long over the course of a tropical year, or 88775.24409 seconds.  This creates some difficulty, since it is close enough to be conveniently considered a day yet not close enough for very accurate tracking.
 +
 
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A day on [[Mars]] is sometimes called a [[sol]], primarily to differentiate it from the term 'day' on [[Earth]].  Because of the extended second, a [[Martian]] day still has 24 hours, each with sixty minutes, each with sixty seconds, even though a given second is slightly longer.
  
In [[Earth]] time, a [http://pweb.jps.net/~tgangale/mars/faq.htm#day sol] averages 24 hours, 39 minutes and 35.24409 seconds long over the course of a tropical year, or 88775.24409 seconds.  This creates some difficulty, since it is close enough to be conveniently considered a day yet not close enough for very accurate tracking.
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The 'weeksols' are named in order: Heliosol, Phobosol, Deimosol, Venusol, Terrasol, Jovesol and Lunasol, named after seven of the most brilliant planetary objects seen from the planet's surface ([[Saturn]] is omitted to avoid confusion with Saturday). As Phobos and Deimos were consumed in the voracious appetite of [[human]] industry, their memory will at least be aided by such naming.
  
 
=== Month ===
 
=== Month ===
Each month is divided into four weeks of seven days, totalling 28 days per month, every month.   
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Each month is divided into four weeks of seven sols, totaling 28 sols per month, every month.   
  
The weekdays are named in order: Heliosol, Phobosol, Deimosol, Venusol, Terrasol, Jovesol and Lunasol, named after seven of the most brilliant planetary objects seen from the planet's surface ([[Saturn]] is omitted to avoid confusion with Saturday). As Phobos and Deimos are consumed in the voracious appetite of [[human]] industry, their memory will at least be aided by such naming.
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=== Year ===
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The [[Arean calendar]] uses the average tropical year.  For [[Mars]], this is roughly 668.5921 [[sol]]s.
  
=== Year ===
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A year normally has 24 months.  Every eighth year, the last month is dropped from the calendar.  Every 304 years, the drop is skipped and the year proceeds normally.  They are named somewhat loosely after the Sanskrit ordinalsWhile originally specified to be much longer, linguistic drift had significantly shortened the names by the time they had come into common use.
As with the Darian and [[Gregorian]] calendars, the [[Arean calendar]] uses the vernal equinox year.  For [[Mars]], this is roughly 668.5907 [[sol]]s.  
 
  
A year normally has 24 months.  On several cycles, the last month of the year is dropped from the calendar. The most frequent 'drop year' occurs every 10th [[Martian]] year.  The next drop cycle occurs every 25th and 75th years in a century. The final cycle occurs every 588th year, beginning with year 589, and assuming [[human]] civilization lasts so long, on those years which would cause two months to be dropped, the dropped month is pushed to the next year instead.
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# Admasa (from aadimamaasa - 'the first month')
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# Dvityasa (from dvitiiyamaasa)
 +
# Trityasa (from tritiiyamaasa)
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# Caturthasa (from caturthamaasa)
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# Pancamasa (from pancamamaasa)
 +
# Sasthmasa (from sasthamaasa)
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# Saptmasa (from saptamamaasa)
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# Astmasa (from astamamaasa)
 +
# Navmasa (from navamamaasa)
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# Dashmasa (from dashamamaasa)
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# Ekmasa (from ekaadashamaasa)
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# Dvamasa (from dvaadashamaasa)
 +
# Trayodesh (from trayodashamaasa)
 +
# Caturdesh (from caturdashamaasa)
 +
# Pancadesh (from pancadashamaasa)
 +
# Sodesh (from sodashamaasa)
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# Saptadesh (from saptadashamaasa)
 +
# Astadesh (from astaadashamaasa)
 +
# Navadesh (from navadashamaasa)
 +
# Vimshasa (from vimshatitamamaasa)
 +
# Ekavim (from ekavimshatitamamaasa)
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# Dvavim (from dvaavimshatitamamaasa)
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# Trayovim (from trayovimshatitamamaasa)
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# Caturvim (from caturvimshatitamamaasa) - Skipped every 8 years, except for every 304th.
  
 
== Usage ==
 
== Usage ==
The development of [[satmet]]s allow for near-instantaneous communication between [[Earth]], [[Luna]], [[Mars]], and [[Ouranos Prime]], and with further plans to incorporate such transmitters into the [[stellar gate]]sThis has made the [[Helios Calendar]] significantly more popular, and general usage of the [[Gregorian]] and [[Arean calendar]] has fallen significantly.
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Shortly after the development of the Martian calendar, the [[Helios Calendar]] was designed and accepted. The instantaneous communication made available by [[tachyon]] transmission quickly eroded the popularity of this calendarAfter the [[Purge]], it is mostly used as an oddity, nostalgic types, and sometimes to throw others off in a conversation.
 
 
Still, it is extremely useful for local needs, and millions of people never have to use anything else to conduct daily business.  It is first and formost a social calendar, and serves as such.
 
 
 
Most call a day a day, only referring to a [[sol]] as a unit of time when being specific or discussing matters with residents of [[Earth]] or [[Luna]].
 
  
 
{{SSG}}
 
{{SSG}}

Latest revision as of 05:24, 2 April 2007

The Arean calendar is a distant variant of the Darian Calendar that was adopted in the early 22nd century by the various people of Mars.

Mechanics

The Martian epoch begins as with the Darian Calendar, on March 11th, 1609 Earth (Gregorian) time, Midnight GMT, as 'year 0'.

Timekeeping on Mars makes use of the 'extended second', which is 1.027491251041666... seconds long. This preserves a 24-hour 'sol'. Typically, many use the terms 'second', 'minute', 'hour', 'day', 'week', and 'month' interchangeably, though when accuracy is noted, standard seconds are assumed.

Sol

In Earth time, a sol averages 24 hours, 39 minutes and 35.24409 seconds long over the course of a tropical year, or 88775.24409 seconds. This creates some difficulty, since it is close enough to be conveniently considered a day yet not close enough for very accurate tracking.

A day on Mars is sometimes called a sol, primarily to differentiate it from the term 'day' on Earth. Because of the extended second, a Martian day still has 24 hours, each with sixty minutes, each with sixty seconds, even though a given second is slightly longer.

The 'weeksols' are named in order: Heliosol, Phobosol, Deimosol, Venusol, Terrasol, Jovesol and Lunasol, named after seven of the most brilliant planetary objects seen from the planet's surface (Saturn is omitted to avoid confusion with Saturday). As Phobos and Deimos were consumed in the voracious appetite of human industry, their memory will at least be aided by such naming.

Month

Each month is divided into four weeks of seven sols, totaling 28 sols per month, every month.

Year

The Arean calendar uses the average tropical year. For Mars, this is roughly 668.5921 sols.

A year normally has 24 months. Every eighth year, the last month is dropped from the calendar. Every 304 years, the drop is skipped and the year proceeds normally. They are named somewhat loosely after the Sanskrit ordinals. While originally specified to be much longer, linguistic drift had significantly shortened the names by the time they had come into common use.

  1. Admasa (from aadimamaasa - 'the first month')
  2. Dvityasa (from dvitiiyamaasa)
  3. Trityasa (from tritiiyamaasa)
  4. Caturthasa (from caturthamaasa)
  5. Pancamasa (from pancamamaasa)
  6. Sasthmasa (from sasthamaasa)
  7. Saptmasa (from saptamamaasa)
  8. Astmasa (from astamamaasa)
  9. Navmasa (from navamamaasa)
  10. Dashmasa (from dashamamaasa)
  11. Ekmasa (from ekaadashamaasa)
  12. Dvamasa (from dvaadashamaasa)
  13. Trayodesh (from trayodashamaasa)
  14. Caturdesh (from caturdashamaasa)
  15. Pancadesh (from pancadashamaasa)
  16. Sodesh (from sodashamaasa)
  17. Saptadesh (from saptadashamaasa)
  18. Astadesh (from astaadashamaasa)
  19. Navadesh (from navadashamaasa)
  20. Vimshasa (from vimshatitamamaasa)
  21. Ekavim (from ekavimshatitamamaasa)
  22. Dvavim (from dvaavimshatitamamaasa)
  23. Trayovim (from trayovimshatitamamaasa)
  24. Caturvim (from caturvimshatitamamaasa) - Skipped every 8 years, except for every 304th.

Usage

Shortly after the development of the Martian calendar, the Helios Calendar was designed and accepted. The instantaneous communication made available by tachyon transmission quickly eroded the popularity of this calendar. After the Purge, it is mostly used as an oddity, nostalgic types, and sometimes to throw others off in a conversation.


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