Hometown Day is a holiday that happens on Animal Crossing and Doubutsu no Mori e+ for GameCube. It is a holiday that is to celebrate the towns unique aspects.
During this day, if the player talks to Tortimer, he will give them a train station model. There are fifteen train station models in the game to match the fifteen different stations possible to receive when the town is created. Of course, the player will receive the model that looks like their personal train station.
It is possible to receive all fifteen models by entering hack-codes at Tom Nook's Store or by visiting a friend's town.