This chart is based upon the longitude of the sun. This is also called solar return chart. The sun transits 360 degrees of zodiac in 365 days 6 Hrs. 9 minutes 10 seconds . Annual horoscope is prepared for he time when sun in transit reaches the same sign, degree, minute and second as at the time of birth. Generally we take one year as 365 days but we have to apply constant of 6 Hrs. 9 minutes and 10 seconds for calculating annual horoscope.
