To many, Labor Day marks the end of the summer season, even as Memorial Day marks its beginning. Many see Labor Day as their last chance to get out and take a vacation before summer is gone, and many workers get a two-week annual vacation period with Labor Day Weekend right in the middle of the two weeks off.
The lifespan of a hover fly is similar to other flies. They can  live anywhere between 15 to 30 days and it all depends on the  climate and temperature they are in.he common housefly (suborder Cyclorrhapha) generally can have a life cycle of 15 to 30 days. Four distinct stages characterize its life cycle: egg, larva, pupa, and adult.
The fact is, fish flies exist solely to mate. Alas for the fly, the lifespan of a single adult specimen is anywhere from 30 minutes to one day, depending on the species. Dead or alive, they stick to decks and houses and patio furniture like Velcro. Many people power-wash the fish flies off their houses and storefronts.