In many places in the world, today is Thanksgiving! So today, we’ll take a look at the Harvest Festival holiday in Animal Crossing: New Leaf. If you consider details about the holiday to be spoilers, do not read or click below here!
Yuuki from our forums describes the holiday:
Basically, [Franklin] will come to your town and cook a Four-Course meal for the occasion, but you need to help him to collect the ingredients (fishes, fruits, season item). You may get those ingredients by doing fetch quests for the villagers. Villagers will stay in their house and cook, and will request different type of fishes from you.
They also noted that they think the holiday runs from 9am to 10pm. Thanks Yuuki!