Nelson Mandela was born in Johannesburg on July 18, 1918 (South Africa) 12:54 UT.

He was born with the Cancer horoscope and Sagittarius ascendant, this combination between Cancer and Sagittarius is one of those that bears fruit, we will see it later with the horoscope of Hermann Hesse, Jupiter is exalted in Cancer and they usually harmonize in a very curious way in the horoscope.
Mandela also has Jupiter in Cancer, therefore the ascendant is exalted, the exaltation of the ascendent is always a beneficial factor to project personality fully, this combination and forgive the comparison also has it in his horoscope Angela Merkel.
The first thing that catches the attention as can be seen is that most of the planets are located in the upper part of the chart, highlighting the social part, but clearly multiplied by the presence of the two benefics in house 7, a configuration very prone to diplomacy and politics, reaching agreements and benefiting from social relations.
Mandela with those characteristics highlighted in his natal chart had a natural ability to reach agreements, agreements are not possible without prior understanding, and surely the motor of his philosophy was the need for consensus, that once mixed with the beneficial potential of his sector 7 with Jupiter and Venus in it, resulted in a pure diplomat.
Mandela's sun is almost exactly over the Procyon star, this star is beneficial for obtaining the help of friends and promotion when not afflicted, although it warns of the danger and struggles that precede the achievement of goals, I have observed this star particularly frequently in the charts of clergy and people who hold certain social relevance.
The natal chart of Mandela is really very clear regarding the stars, because both the Sun with Procyon and the Moon overUnukalhai, reveal part of his most notable vital characteristics.
Unukalhai is the heart of the serpent, and if we literally translate what Robson collected about this star along with the moon, the following characteristics are listed: Intelligent, bad environment, hatred of authority, involved in intrigues and plot, exiled, imprisoned, death by possible poisoning, WHAT MORE CAN BE SAID.
The stars give special relevance to planets when they are in angle with them, but even more so to the ascendant or the MC, in Mandela's case the planetary conjunctions don't stop there, also Mars over Algorab and Venus over Alnilam, such quantity of conjunctions with stars are often a pointing finger of an unusual destiny, in other cases however we can find them in people with disabilities or strange pathologies, but when many occur simultaneously the social significance usually happens.
In Mandela's horoscope the Moon is found not only over a star that indicates imprisonment, but also is in sector 12, which indicates the trials the person will go through in their life, in addition to being in the sign of Scorpio, a sign precisely linked with the darkest part of society.
This Moon is also in aspect of tension with Saturn and Mercury, Mandela went through very difficult trials in his confinement, the moon is a very clear aside in this horoscope. Despite what has been mentioned, the moon is found in trine with the sun, performing another of the winning combinations I sometimes find in a natal chart, the Sun in Cancer and the Moon in Scorpio in trine, this aspect the moon's tendencies, tendencies that by themselves are really complicated and could have caused him death in prison, the trine is with the sun in sector 8, precisely the moon from Scorpio to its sector, this gives food for thought, the first thing that comes to mind is the protection he enjoyed in his captivity, protection that I don't read about anywhere, but is evident in his birth chart, was he perhaps protected by invisible forces??.
Evidently special is the trine of Uranus in Aquarius with Venus on the cusp of house 7, on one hand it highlights the ability to integrate an enormous number of different sensibilities, and on the other his inventive capacity to achieve it, Mandela was a very intelligent person with a purpose.
Just as we saw in the natal horoscope of the currentPOPE, Francis, Mars is in Libra, the Dalai Lama also has it, it seems logical that this position of weakness of Mars is found in defenders of the diplomatic path, but let us not forget that Mars in Libra even desiring peace, on many occasions must face the struggle, perhaps unwanted, but peace sometimes comes accompanied by indirect means of confrontations and violent clashes.
A natal chart like this, even though it is interesting and curious to see, is small compared to the struggles and feelings of its owner, in this case an eventful and difficult life like Mandela's and the achievement of such grandiose objectives on his part, can only be due to one factor, MANDELA HIMSELF, It was a stroke of luck to coincide in this generation with someone like that.