Yes, the Parkland shooting (at Marjory Stoneman Douglas High School) took place the day before a solar eclipse and it is important to make note of that. People were stirred up and that might have been a catalyst for the gunman’s decision to take action at the time. However, I think we need to take a look at some other prior eclipses that are important and that were stimulated/activated at the time of the shooting.
First, the total solar eclipse on August 21, 2017 - the Great American eclipse - was stimulated/activated by the Sun (in opposition to the eclipse point). And, this eclipse was visible in much of the USA. In the chart for this eclipse (over Washington DC), we see that Mars is widely conjunct the eclipse point, and Mars is the planet that rules firearms and guns. Therefore, this eclipse is probably more related to this event than the February 15 eclipse. If we look at the chart for the state of Florida, we see that Mercury is at 27 degrees Aquarius. And, Mercury is the ruler of the chart. With transiting Sun conjunct, important news from the state was expected. In the state of Florida chart, Venus is at 24 degrees Aquarius. Libra, which Venus rules, is encapsulated within the fifth house in Florida’s chart. Transiting Mercury (in the event chart) conjunct Venus tells us that this important news involves children. In the state of Florida chart, the Sun is at 13 Pisces. In the event chart, transiting Mars is at 12 Sagittarius (and, in square aspect to Florida’s Sun). In Florida’s chart, the Descendant is at 13 Sagittarius, so transiting Mars was conjunct. Transiting Neptune (in the event chart) is at 13 Pisces and conjunct Florida’s Sun.
Another eclipse that we need to look at is the lunar eclipse on August 7, 2017. This eclipse occurred at 15 Aquarius. Mars is conjunct the Sun in this eclipse chart and as such is the ruler of the chart. The Moon (in the shooting event chart) is at 14 Aquarius and conjunct this eclipse point. The lunar node is at 15 Leo in the shooting event chart. Asteroid Cruz is at 17 Leo. Ceres (and Venus) is at 12 Cancer and the eighth house of death in the eclipse chart. In the state of Florida chart, the Moon is at 12 Capricorn. Sadly, there were a lot of grieving mothers after this incident.
There is one more eclipse to look at, which occurred on September 1, 2016 - a solar eclipse at 9 Virgo and in a moderate opposition to the Sun in Florida’s chart. The eclipse is conjunct fixed star Antares. In that eclipse chart, Mars is at 14 Sagittarius and conjunct Saturn and in square aspect to the eclipse point. In Florida’s chart, the Descendant is at 13 Sagittarius.. Neptune is at 11 Pisces and in opposition to the eclipse point and setting up an ominous t-square. Transiting Mars (in the shooting event chart) was activating this eclipse by square aspect. Pluto is at 15 Capricorn and in the fifth house of children in this eclipse chart and conjunct the Moon in Florida’s chart. So, this eclipse is related to the event, and it might even be the most important one.
In a location chart, the Moon represents the people. And, in the chart for the state of Florida, the Moon resides in Capricorn. Saturn rules Capricorn, and it is on the Descendant in the shooting event chart. The victims of this event are the people of Florida. The fifth house (of children) in the shooting event chart is ruled by Venus, and transiting Mars is in square aspect to transiting Venus in this event chart.
The killer, Nikolas Cruz, was born September 24, 1998 (exact time is unknown, so I've used the 12 Noon chart). His natal Mars is at 22 Leo. The lunar eclipse of February 10, 2017 fell conjunct his natal Mars. This is the month that he purchased the gun that he used in the killings, although I cannot find an exact date. He committed this atrocity about a year later as transiting Mercury conjoined this eclipse point and transiting Jupiter squared it. His natal Pluto is at 6 Sagittarius. Mars had conjoined his natal Pluto just days before the shooting.