Born on the same day but with differing temperaments and separate paths in life. The planets and aspects can be identical but if the birth time is different and thus the planets sit in different houses there can be a world of distinction.
Pakistan split from India but celebrated its independence at 9.30am the day before on 14 August 1947 where India waited till midnight to begin their new journey. Both have fixed, enduring charts with a flamboyant Leo Sun square Jupiter in Scorpio but with an undertow from a can-be-self-destructive Saturn Pluto conjunct Venus hinting at hardship, deprivation and a tilt towards war-mongering.
Pakistan has the volatile, eruptive Mars conjunct Uranus on their Midheaven suggesting a hair-trigger fuse, a tendency to be overly-reactive and defiant, with a warrior ideal. Their 11th house Mercury, Pluto, Saturn, Venus, Sun hints at their tendency to have military or hybrid military/political governing classes. Neptune in their 1st house may hint at an evasiveness or even an image linked to narcotics.
India has its can-be-destructive, unyielding Saturn Pluto closer to the IC and Sun Venus in the 4th so their focus is internal, wrestling with domestic hardship and inspired by an affection for the homeland. The volatile Mars Uranus falls in the India 2nd house and Jupiter in the 6th so money and employment will be areas of primary interest and attention. In many ways India is a more insular country. Pakistan is outward looking (11th house) and keen on its independence (left hand chart).
House transits which show the broad context of changes will also differ with another axis and Midheaven/Ascendant. Pakistan has tr Neptune square the MC in 2025 for a directionless drift and disappointment with neighbours as tr Neptune enters the 7th. Where India will be less undermined by Neptune except where money is concerned but will be rebellious and independent come 2025 with Uranus moving across its Ascendant.
Another example is TV presenter and property expert Jonnie Irwin, who has just died, and former racing driver, Red Bull Formula 1 principal Christian Horner were born on the same day 18 November 1973. Jonnie Irwin seemed mild mannered in contrast to Horner who has been accused of controlling behaviour, though to date has not been found guilty. Neither has a birth time so to illustrate the difference houses can make the following is entirely speculative.
Both have an intensely determined Scorpio Sun; with a volatile, excitement-junkie Mars in Aries opposition Uranus and inconjunct Sun; and an emphasized Saturn on the focal point of a yod to Jupiter sextile Neptune and square Pluto.
Jonnie Irwin dealt in property so giving him a 2am birth time puts his creative Venus in his 4th; with a communicative Sun, Neptune in his 3rd, good for presenting work. Pluto would sit in his 1st giving him a controlled image with a well-organised, businesslike Saturn in his 10th. His Jupiter in his entertaining 5th would help him on TV. His volcanic Mars would be buried in his 8th so less visible. So he would come across as reasonably battened down as well as chatty and good at performing.
If Christian Horner, being sportingly inclined, has Mars in his 5th house, his adrenaline-junkie tendencies will be more obvious and more significantly, on this scenario, his Pluto will be in his career 10th making him influential, controlling and can-be-dominating.
A different birth time can alter the trajectory of the planets and what gets highlighted and what suppressed. The strong similarities will always be there but distinct variations as well.
Mind you I have known twins born close together in time who picked up different strands of the same energy and acted them out in different ways. Two Scorpios, I recollect, whose mother said one lived all the positive traits and the other the negative.
There is an X factor which the chart won’t show which can be explained by those who believe in young souls and old souls. The more evolved will be more self-aware and able to get the best out of their chart, maximise its potential. Where the unevolved will stumble along blindly and not make the most of the hand of cards they were dealt. It always sounds elitist so makes me cringe slightly but there may be a mite of truth in it.
I’m sure everyone will have examples to illustrate. Feel free to pitch in.
ADD ON: Most useful piece on dwads with easy to read chart from Mel Priestley below. URL won’t load so have put in quotation marks.
The Mountain Astrology piece backs up the notion of twins dividing up the planetary traits, some shared, some different.