He was born with Cancer rising, Jupiter and Mars in Cancer. Jupiter, the wisdom planet, was exalted in Cancer. Cancer represents the Heart of the Cosmic Man and Cancerians are tied and tuned to the Cosmic world.
Jupiter is the planet of divinity and he has conferred Hamsa Maha Yoga, one of the best yogas in Astrology. The native born under Hamsa Yoga not only becomes religious, but will revive true Religion ! Due to the divine nature of Jupiter who had caused Hamsa Yoga, he had the confidence that every step was divinely ordained.
The Roman emperor Augustus Caesar was, like him, born under Hamsa Yoga. A true Raja- Rishi or a Philosopher King, his reign was known as the Golden Age of Rome. Augustus founded the Religion of Numa, defined by Buchan as a probe into the mysteries of the Infinite and the Unknown.
Like those ancient, orthodox Raja- Rishies, Aurobindo had consecrated all his efforts to divinise humanity !
Saturn was in Sagittarius, indicating that a foreign lady will join in his mission. He synthesised the different systems of Yoga as the Integral Yoga. He was one of the greatest Integrators who graced this planet !