A solar calendar or sun calendar is a calendar whose dates mentions the season or almost proportionately the position of the apparent position of the sun in association to the stars. The Gregorian calendar, broadly agreed as standard in the universe, is an example of solar calendar.
At the kind heart of the Indian calendar is the solar calendar depended on the Indian equivalent of the zodiac. A year is computed by having track of the relative motion of the sun in contrast to the stars.
As the earth rotates around the sun, the sun as appeared from the earth seems to move with respect to the stars in the background. The apparent path of the sun based on a fixed line (orbit) via the sky known as the ecliptic.
The name of every month in the state of Kerala corresponds to the Zodiac constellation that that sun is in during that month. Thus, in the month of Mesha, the sun is in the constellation Mesha.
By guaging the results of the sun along the ecliptic, one can follow track of the way of the year. If we set the point on the ecliptic where the sun is presently, the sun will next come back there actually a year later.
Of course one cannot straightly observe which stars the sun is moving in front of, since we cannot view the stars when the sun is glittering. However, we can indirectly infer the level of the sun by observing that stars on the ecliptic are showing close to the horizon just before sunrise and just after sunset.
For ease, the ecliptic (that is a circle) is parted into 12 equal segments. Every segment is connected with a constellation. These 12 exclusive constellations are the signs of the zodiac.
A solar month is the time consumed for the sun to pass via one of the 12 segments. The time while the sun crosses from one sign to the next is known as a sankranti and denotes the starting of the solar month.
2 popular sankrantis are Makara Sankranti / Pongal around January 14th and Mesh Sankranti on April 14. Mesha Sankranti denotes the starting of the new year in Assam, Kerala, Bengal, Orissa & Tamil Nadu — these states opts a purely solar calendar for setting the length of the year.
|Names of solar months in|
|Most of India||Tamil Nadu||Kerala||Starts on|