Synchronous Fireflies 2024 Dates. Key information for the 2024 annual firefly viewing opportunity: Synchronous fireflies (photinus carolinus) are one of at least 19 species of fireflies that live in great smoky mountains national park.

Research on grandfather mountain has confirmed the presence of 10 species of fireflies or luminous insects, including synchronous fireflies (photinus carolinus), blue ghost. In 2024, the lottery to see the synchronous fireflies in the great smoky mountains national park opens on april 26, at 10 a.m.