The FAR/AIM handbook is the pilots "bible" on everything flying including where to find the info on civil twilight for your location and date.
Copied from the AIM:
1. Astronomical data for the determination of Moon rise and set and Moon phase may be obtained from the United States Naval...
The shooter was within 30 yards of the left side of the drone slightly behind the drone 10 yards ish. .223 to 30 cal seems about right. That’s some impressive battle damage.
The eye is most sensitive to yellow and least sensitive to blue. Reflective, polished aluminum like surfaces have terrible visibility, this is from experience as a GA pilot.
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