8:05 pm – 8:35 pm

 when conditions allow, i.e. when the atmosphere is stable, no pressure drops, no strong wind or rain in the area, If conditions look good (low or no wind), get there early!
The Congress bat pups have been flying for about 7 weeks now, so flights can be great nowadays, especially if a front moves through that stirs up insect activity. However, flights are normally diminished with a Waxing Gibbous / Full moon.

Sunset: 7:45 pm
Dark: 8:15 pm (10-20 min). earlier if cloudy)
Sunrise: 7:11 am

Flight: 8:16 pm
Scouts: 8:12 pm

30 mins after sunset (well after dark on a Mostly Cloudy evening) ~53% of the colony flew 12 miles SSW (12% of them went to altitude) on NE Winds at 3 mph – had been northeasterly 5-9 mph with Light Rain most of the afternoon, Mostly Cloudy, Temp 74°F, Dew Point 71°F steady, 9 Cooling Degree Days, Cloud Base 684′, RH 91% rising, Heat Index 75°F, BP 30.09 rising, sea level pressure 1018.1 mb rising, bats viewable until 10:25 pm under streetlights

8:05 pm – 8:35 pm

 when conditions allow, i.e. when the atmosphere is stable, no pressure drops, no strong wind or rain in the area, If conditions look good (low or no wind), get there early!
The Congress bat pups have been flying for about 6 weeks now, so flights can be great nowadays, especially if a front moves through that stirs up insect activity. However, flights are normally diminished with a Waxing Gibbous / Full moon.

Sunset: 7:46 pm
Dark: 8:16 pm (10-20 min). earlier if cloudy)
Sunrise: 7:11 am

Flight: 8:10 pm

23 mins after sunset (at or after dark on a Mostly Cloudy evening) only ~23% of the colony flew 8 miles SSE on N Winds at 9 mph – had been N 9-17 mph all afternoon with gusts to 23 mph around 12:30pm, Mostly Cloudy, Temp 79°F, Dew Point 69°F steady, 16 Cooling Degree Days, Cloud Base 2280′, RH 72% rising, Heat Index 82°F, BP 30.002 rising, sea level pressure 1015.6 mb rising, bats viewable until 9:41 pm under streetlights

8:05 pm – 8:35 pm

 when conditions allow, i.e. when the atmosphere is stable, no pressure drops, no strong wind or rain in the area, If conditions look good (low or no wind), get there early!
The Congress bat pups have been flying for about 6 weeks now, so flights can be great nowadays, especially if a front moves through that stirs up insect activity. However, flights are normally diminished with a Waxing Gibbous moon.

Sunset: 7:47 pm
Dark: 8:17 pm (10-20 min). earlier if cloudy)
Sunrise: 7:10 am

Flight: 8:12 pm

24 mins after sunset (about at dark on a Partly Cloudy evening) only ~18% of the colony flew 4 miles NNE on SW Winds at 10 mph – had been southeasterly 7-13 mph all afternoon with gusts to 20 mph around 2:30pm, Partly Cloudy, Temp 93°F, Dew Point 64°F rising, 21 Cooling Degree Days, Cloud Base 6612′, RH 38% rising, Heat Index 95°F, BP 29.83 rising, sea level pressure 1009.0 mb rising, bats viewable until 9:49 pm under streetlights