The Jallianwala Bagh massacre, also known as the Amritsar massacre, took place on 13 April 1919 at 17:37 IST when troops of the British Indian Army under the command of Colonel Reginald Dyer fired rifles into a crowd of Punjabis, who had gathered in Jallianwala Bagh, Amritsar, Punjab. https://en.wikipedia.org/wiki/Jallianwala_Bagh_massacre
Astrologers have long recognized that eclipses are linked to major paradigm altering events. The centenary of the Jallianwala Bagh massacre is an occasion to examine how historical events are shaped by the stars. The brutality of the massacre fuelled widespread anger, later leading to the Non-cooperation Movement of 1920–22.
Presented here is a chart at Amritsar for the solar eclipse of December 3, 1918 just about 4 months prior to the incident. Notice that the eclipse along with Venus falls in the 5th house which among other things rules public parks and other places of recreation and enjoyment . The Jallianwalla Bagh is a public garden , walled on all sides, with five entrances. On Sunday, 13 April 1919, Dyer was convinced of a major insurrection and he banned all meetings; however this notice was not widely disseminated. That was the day of Baisakhi, the main Sikh festival – a time of celebration and enjoyment for the local populace which had gathered in the Bagh.
The eclipse was conjunct the star Alpha (α) Scorpius, Antares, a red binary star, fiery red and emerald green, near the center of the constellation Scorpius sometimes called "the Heart of the Scorpion". The Scorpion’s heart combines its energies with stars of Draco the Dragon. Combined this produces a tendency to belligerence, violence and suspicion. The unearthly power of the Dragon brings here ferociously ambitious, imperious, glory seeking people who can be rash and headstrong. Diana Rosenberg  links this star to “mass deaths; racial and human rights events, extremism, terrorism and murder”.
All this fits very well with General Dyer’s nature and the events that unfolded on the fateful day. But how can we sure that this eclipse was indeed affecting the massacre. Astrologers have devised a simple technique to check whether an eclipse affects a particular day. The method is to progress the eclipse chart to the day of interest and check whether the eclipse (or any important configuration) reaches the angles.
Here is the chart of the eclipse progressed to April 13, 1919. Notice the perfect alignment of the horizon axis with the eclipse thus triggering its potential on that tragic day.
 Secrets of the Ancient Skies; Diana K. Rosenberg (v.2, p 321-324)