Swami Vivekananda's Birth Chart

Behind Saturn and the Sun come Mars beside the IC, an empty water element, a combust Venus, two T-squares and five planets in air. Only the angle contacts hang on the minute.

Bhupendranath's page 72 sets the birth in the predawn Brahma muhurta of Makar Sankranti, at 6:31:33 AM. India had no standard time in 1863, so the hour is read on Calcutta's mean solar clock, UTC+5:53:28; computed sunrise came 11 minutes later.

The disciples' Life, from 1979, prints 6:33:33 AM unsourced, probably the same horoscope with one figure misprinted. Its editions from 1933 into the 1960s, and Gambhirananda in 1966, say six minutes before sunrise, about 6:37 AM by our reckoning. In Pramathanath Basu's biography, Rajendranath Ghosh moved a copied horoscope six minutes later, to 6:49 AM, so Capricorn would rise sidereally; by subtraction the copy's time was near 6:43 AM. Tropical Capricorn survives all; houses are touchier. Add 9 minutes and Neptune counts as 2nd-house; add 16 minutes and the Sun turns 12th-house; take away 11 minutes and Mars turns 4th-house.

The base is an opposition from Mars, 28°16′ Aries, to Jupiter, 25°57′ Libra, and two Capricorn bodies square both ends: the Sun at 21°22′ Capricorn and Venus in the sign's last degree. No major aspect is closer than Venus square Mars, 0°46′. Any T-square appears in about one chart in 6; both of these lie wholly in cardinal signs.

Saturn, exalted at 5°31′ Libra in the 9th house, moved 19 arc-seconds that day and halted about three days later, then turned retrograde (about one chart in 15). Its declination lay within one arc-minute of zero, with nothing out of bounds. The Sun, in the first house, was about to cross the Ascendant (about one chart in 9).

Mars, at home in Aries, sits 2°46′ short of the IC at 1°02′ Taurus; within three degrees, that contact turns up in about one chart in 15. Of the recorded times, only the adopted one keeps it: at 6:33:33 AM the gap is already 3°17′.

Closest of all, though minor: the Moon (9°22′ Libra) and Pluto (9°26′ Taurus) sit 0°03′ from a quincunx. The Moon also joins Saturn, 3°51′ apart, and with Jupiter forms a Libra trio in the 9th house. Tradition ties a Moon–Saturn conjunction to restraint and duty in feeling.

No planet occupies a water sign (about one chart in 14); the element tally finds water only at the Midheaven, in Scorpio. Air holds five of the ten planets (about one chart in 15), the Libra trio plus Mercury and Uranus, and cardinal signs take eight of twelve points. The planets form a seesaw of two facing clusters, none in houses ten to twelve.

Before sunrise, the ruling sect is the nocturnal one of the Moon, Venus and Mars; Ghosh's 6:49 AM would flip it to day. Venus, 7°40′ east of the Sun, is combust (about one chart in 9); Mercury, 12°20′ away, is under the beams. Mars tops the strength scores at 92; Pluto, retrograde in detriment, comes last.

The nearest charts share only the Capricorn Sun: Catherine, Princess of Wales, scores closest, then Lewis Hamilton, Denzel Washington and David Bowie. No other databank birth falls on January 12, 1863.

Less the Lahiri ayanamsa of 21°56′, the Ascendant drops to 25°39′ Sagittarius and the Sun to 29°25′ Sagittarius, under a degree short of the ingress that made the day Makar Sankranti. Counting whole signs from Sagittarius, Jupiter is eleventh and Saturn tenth, as the Life's 1933 revision printed. Ghosh's 6:49 AM lifts this Ascendant to 0°03′ Capricorn.

Saturn regained its birth degree on October 14, 1892, at age 29.8, its only return before his death on July 4, 1902. Jupiter's first return took three passes, the middle one retrograde, ending on August 13, 1875; later returns fell on November 24, 1886 and November 7, 1898.

For the Datta house site, 22°35′ N, 88°22′ E, precise astronomical calculations fixed every body; cusps are Placidus, the zodiac tropical. A rate is the fraction of made-up 1860s births, scattered over all hours and the world's towns, showing that feature.