The Fireworks Festival is an annual event that takes place in Harvest Moon: Seeds of Memories.
It is a romantic festival where the player gets to spend with a boy/girl that they are interested in. The festival is held on top of the mountain where the white pillars are.
Time : 5:00PM - 9:00PM
Date : 12th of Summer and Winter
Venue: Mountain, meet in your house
On Summer 4, Rowan will appear in your house first thing in the morning. He let you know about the upcoming Fireworks festival and recommends you invite a marriage candidate along.
Talk to the marriage candidate of your choice, and a prompt will ask if this is the person you want to invite. When the person accepts, he or she will tell you that they will pick you up on your farm between 5:00PM and 7:59PM. Enter your house between those times and a cut scene will trigger.
After the fireworks festival, you will appear back in your house on the same night at 9:00PM. You will earn about a half-note of friendship with the person you invite.
Unlocks memory: Fireworks Festival and Crystal Ore.
Fireworks Cutscene : https://youtu.be/eP3Q9nhuIHY