Synchronous Fireflies 2024 Dates Mumbai. Fireflies are bioluminescent beetles bugs.  — while great smoky mountains will announce their viewing dates in late april, congaree has already set its 2024 synchronous fireflies viewing event from may 16 to 25 this year.

 — great smoky mountains national park will host the annual synchronous firefly viewing opportunity at elkmont from monday, june 3 through monday, june 10. Western ghats jungles will soon twinkle with a small light, and this period is the mating season for fireflies.