8:30 pm – 9:00 pm
when conditions allow, i.e. when temps are >50°F, Dew Point >45°F, Heating Degree Days <9, atmosphere stable, no pressure drops, no strong wind, no rain in the area.
Not much of a chance of  a good flight until conditions stabilize

Sunset: 8:11 pm
Dark: 8:41 pm (10-20 minutes earlier if cloudy)
Sunrise: 6:44 am