Hora Sara is an ancient treatise on the predictive part of Hindu astrology; it is written in SanskritSloka – format. Its author, Prithuyasas, was the son of Varahamihira (505–587 CE) who at certain places even contradicts his father; for example, in respect of Vihaga yoga, a Nabhasa yoga, that arises when all planets occupy the 4th and the 10th, he has assigned auspicious results. Hora Sara is deemed to be one of the best classics on predictive astrology that was given due important representation in Hora Ratna of Bala Bhadra authored during the reign of MughalEmperorShah Jahan "Just as Varaha is a synonym of astrology, his son, Prithuyasas, occupies the zenith in the astrology’s world through his master piece, Hora Sara".
This unique work on astrology covers a very wide range of topics through its thirty two chapters – characteristics and nature of signs; characteristics and nature of planets; evaluation of strengths of planets; Births; bad and evil indications at time of birth; Arishta yogas; Longevity; effects of Planetary periods in general and of seven planets; Miscellaneous dasha effects; effects of Ashtakavarga; effects of sub-periods of planets; effects of Chandra yogas and Nabhasa yogas; Raja yogas; results of planets in various houses; implication of Karma bhava i.e. the 10th house; effects of conjunction of two or more planets; results of adverse combinations; Female horoscopy; on Death; on Lost horoscopy; on qualities of Constellations; results of Chandra-rasi at birth; effects of births in different amass; Nakshatra dasha results and on Jataka lakshana. Hora Sara has also indicated results of omens.