sol.gif (8692 bytes)

Solar Calendar


    One is a solar calendar devised by my at the beginning of the Eighties. One is based on the position of the Sun in a certain constellation. & the day represents in number of corelative days that is in this constellation.  

    Peculiarly the year is something more complicated to impose since we were that the 31 of December of the gregoriano belongs to the 14 of Sagittarius, and 1 of January or New Year it becomes day 15 of Sagittarius; therefore, a change also does not exist, of solar month to the change of the year. Logically he is not correct to happen of the 14 of Sagittarius of year 2000 to the 15 of Sagittarius of the 2001.

    The solution in this case is complicated based on as we must raise the solar year to us. From my point of view I observe two options to emphasize:

  • Beginning of the year in Sagittarius 1st,  that corresponds to December 18th. More comfortable option to agree almost with single the Natural Year in 12 days and also to come near in single five days to the solstice of winter very celebrated in the majorities of the cultures to begin the days to extend itself.

  • Beginning of the year of Piscis 1st or March 12th, to already begin the equinox of spring, important date in some cultures by its symbolic value of birth of the Nature.

    Not seen sight and, I consider the best option first, by the amplitude of the arguments as much practitioners as historical. However, any opinion as much yours as the one that express in these lines can be considered like correct and respectful. If you wish to suggest any thing to me you can send an email to me, that with pleasure I will answer.

    With a program of Java and many hours put in front of the computer to understand something more of programming, I have been able to as much make a perpetual calendar of the date of today in the civil calendar present gregoriano like in the solar calendar


Today is:




     The calendar is formed by thirteen months that represent aforesaid the thirteen constellations that during a year the Sun crosses. The months in corelative order are the following ones: Piscis, Aries, Taurus, Gemini, Cancer, Leo, Virgo, Free, Scorpius, Ophiuchus, Sagittarius, Capricornius & Aquarius. 

    With the civil calendar that at the moment is in vigor is a small difference of something more of a day than it repeats every four years, due to the difference with the leap year year, this it implies that the month of Aquarius a day by the 29 is extended more of February.

   Coordinates 2000,0 in relation to the precession of the equinoxes have been considered for their processing. Since with the passage of the years & due to the movement of precession of the equinoxes the calendar will vary in relation to the gregoriano or civilian who we have at the moment.

    Next the explanatory one of the months, its duration is exposed in table I, beginning & end translated to the present gregoriano calendar.



Psc Ari Tau Gem Cnc Leo Vir
Begin Mar. 12th Apr. 18th May 14th June 21st July 20th Aug. 10th Sep. 16th
End Apr. 17th May 13th June 20th July 19th Aug. 9th Sep. 15th Oct. 30th
Time 37 26 38 29 21 37 45


Lib Sco Oph Sgr Cap Aqr
begin Oct. 31st Nov. 23rd Nov. 30th Dec. 18th Jan. 20th Feb. 17th
End Nov. 22nd Nov. 29th Dec. 17th Jan. 19th Feb. 16th Mar. 11st
Time 23 7 18 33 28 23 or 24


   It is interesting to observe long it that is the month from Virgo with 45 days & the brief thing of Scorpius of only 7 days. The month of Aquarius lasts 24 days when the gregorian year is leap year.   Also, he is interesting to stand out that the Sun crosses the constellation of Ophiuchus during the first weeks of December, when has never been considered zodiacal.

 Masm (Last update 11.13.2006)