Today is the 25th anniversary of that meeting. We do not know the exact time. I have set it at 6pm, as the day would have started to cool down but then, and it's between 4pm and 7pm prayers, time for a glass of tea. So the rising degree and houses are definitely iffy.
However, we can say that Al Qa'ida was born at the dark of the moon as it opposed the sign of revolution, Aquarius. Mercury, the planet of conversation, trines Uranus, the planet of rebellion conjuncting Saturn, the grim reaper.
One of the prime objectives of Al Qa'ida was and is to strike fear into our hearts, and spread confusion. In other words, propaganda. Neptune is the planet that rules gossip and lies and it sextiles death himself, Pluto and squares the planet of war, Mars. This is violence for the purpose of propaganda. Both the war planets, Pluto and Mars, are at exact inconjunct to each other, and strong in their own signs.
This meeting is said to be when bin Laden's money (Venus) married Zawahiri and the doctor's ideology (Neptune).
Enough. Here is the chart for your reference, and here is how it interacts with the chart for 9/11. The action of Venus is especially interesting.