Phineas and Ferb Day

Occurrence:
2X
Hashtags:
References:
en.wikipedia.org/wiki/Phineas_and_Ferb
disney.fandom.com/wiki/Rollercoaster
x.com/alfa9_delta/status/368866100420685825

This day takes place twice annually, on the 17th of August and on the 3rd of June.