While the exact year isn't specified, the show uses references that place it around the late 2000s or early 2010s, including:
* Technology: The gadgets and inventions Phineas and Ferb create, like the giant robot and the time machine, reflect the technology available during this time period.
* Music: The show features songs that were popular around this time, and even uses modern music styles like hip-hop and electronic dance music.
* Fashion: The characters' clothing and hairstyles are consistent with fashion trends from the late 2000s and early 2010s.
However, the show itself emphasizes the timelessness of summer, focusing on the joy of being free from school and the endless possibilities of summer adventures. So, despite the technological and cultural references, the show ultimately takes place in an idyllic summer that transcends any specific year.