Flight: 8:36 pm

-13 minutes after sunset (17mins before dark) only ~26% of the colony flew 12 miles SSW (~23% of those climbed to altitude) Winds Variable  – had been Light & Variable all afternoon , A Few Clouds, Temp 91°F, Dew Point 68°F steady, 20 Cooling Degree Days, Cloud Base 5244, RH 47% rising, Heat Index 95°F, BP 29.88 steady, sea level pressure 1010.5 mb rising, bats viewable until 9:47 pm under streetlights