In the Year 2525

   The song wonders, “In the year 2525, if man is still alive . . . ”

   In what year must man be alive to hear the cicadas and see Halley’s comet in the same year?

Background:
   The cicadas last appeared in 2004 and return every 17 years.  
   Halley's Comet last appeared in 1986 and returns every 76 years.

Answer: