- For other uses, see Sunny Day.
Sunny Days is an achievement that can be obtained in the iOS, PC, Nook, and Android versions of Plants vs. Zombies. It requires the player to have 8000 sun at any time during a level. It is worth 15 points on the Game Center.
- The achievement's name may be inspired by or be a reference to the theme song of Sesame Street.
- It may also be a reference to the sitcom Happy Days.
- In the iOS version of the game, this achievement cannot be earned in Zombiquarium.