23rd of Spring, from dawn until 3pm in the Town Square.
The Peddler will be selling a Snow Flower Seed for 2,000 G that you'll need to get for a Power Berry. The seed vendor will be selling 3 types of perfume that you can buy for 1,000 G each and gift to a girl of your choice. At the end, you can choose a girl to dance with.
Nina loves all 3 perfumes. Ann loves Violet. Ellen loves Rose. Maria loves Violet. Eve loves Rose.
12th of Fall in the Town Square.
Bring a Fish or Moon Flower for part of the festival and you'll receive a Power Berry. Both can be found in the Back Hills (north of crossroads). Talk to the fisherman by his tent during the day to be lent the fishing rod (sit on the bench to the right). The Moon Flower can be found on the summit.
Egg Hunt Festival
20th of Fall in the Town Square.
The mayor will reveal a coloured egg that can be found somewhere in town. If you find it, bring it back to him first. If you bring back the most, you'll win either a charm that protects you from natural disasters or a Power Berry.
10th of Winter, at your Farm.
Star Night Festival
24th of Winter at the Spa in the Mountain, the Bar, the Summit, the Church, or the Town Square.
30th of Winter, from 12am at the Summit.