Overview
Every NPC in Starsand Island has a birthday that falls on a specific day within one of the four seasons. The in-game calendar runs on a 28-day season cycle with four seasons (Spring, Summer, Fall, Winter), making the full year 112 days long. Knowing when each character's birthday falls gives you an opportunity to strengthen your relationship with them through thoughtful gift-giving. Birthdays are one of the key social mechanics tied to the Friendship and Gifting system.
You can check upcoming birthdays through the Social app on your in-game Phone, which shows each NPC's profile including their birthday. Planning ahead and preparing a loved gift for an NPC's birthday is one of the best ways to build Affection Points efficiently.
Full Birthday Calendar
The table below lists every NPC with a verified birthday, organized by season and sorted by date. Romanceable characters are marked with an asterisk (*).
Spring Birthdays
Day | Character | Role |
|---|---|---|
Spring 3 | Farming Mentor, Happiness Seed Shop owner | |
Spring 3 | Botany student (crossover from Sandrock) | |
Spring 10 | Ranching Mentor, Green Pasture Ranch owner | |
Spring 11 | ||
Spring 14 | Musician, Silvan Notes shop owner | |
Spring 17 | Crafting Mentor, Zerine's General Store owner | |
Spring 28 | Disciple, spiritual protector of the island |
Summer Birthdays
Day | Character | Role |
|---|---|---|
Summer 3 | Fishing Mentor, AquaBlue Outpost owner | |
Summer 3 | Artist, Loren's younger sister | |
Summer 8 | Retired seed store operator, Graminova's father | |
Summer 11 | Hair stylist, Bloom Atelier owner | |
Summer 13 | Carpenter, Lex Woodworks owner | |
Summer 13 | Chef, Aureleaf Kitchen owner | |
Summer 13 | Mechanic, G-Power Bike shop owner | |
Summer 16 | Explorer, Exploration Club leader | |
Summer 27 | Island elder and community leader | |
Summer 29 | Coast guard officer and lifeguard |
Fall Birthdays
Day | Character | Role |
|---|---|---|
Fall 6 | Arcade manager, Chrono Arcade operator | |
Fall 16 | Clothing boutique owner, Ethereal Styles | |
Fall 26 | Mayor's granddaughter, Community Center staff |
Winter Birthdays
Day | Character | Role |
|---|---|---|
Winter 6 | ||
Winter 18 | Pet shop owner, Woof & Wow Pets | |
Winter 22 | Doctor (crossover from Sandrock) |
Characters Without Listed Birthdays
Several NPCs do not currently have verified birthdays. The crossover characters Gust and Ginger (from My Time at Portia) arrived on the island as part of a collaboration event, and their wiki pages do not list specific birthdays. The same applies to Hattie (Zerine's grandmother), Matilda (Sagewood's wife and Graminova's mother), and Charlene (the coffee shop worker). As the game continues through Early Access, these characters may receive birthday assignments in future updates.
Shared Birthdays
Some characters share the same birthday, which means you can plan your gifts efficiently if you stock up ahead of time.
Spring 3: Graminova and Nia. Both celebrate on the third day of Spring. Have two gifts ready so you can visit them both.
Summer 3: Delphin and Momo. Delphin is usually at AquaBlue Outpost, while Momo can be found near her brother Loren or at the beach.
Summer 13: Alex, Aurelis, and Neona. Three characters share this date, making it the busiest birthday on the calendar. Prepare three separate gifts if you want to visit all of them.
Seasonal Summary
Season | Number of Birthdays | Date Range |
|---|---|---|
Spring | 7 | Day 3 to Day 28 |
Summer | 10 | Day 3 to Day 29 |
Fall | 3 | Day 6 to Day 26 |
Winter | 3 | Day 6 to Day 22 |
Summer is by far the busiest season for birthdays with 10 characters celebrating, including the triple-birthday on Summer 13. Fall and Winter are the quietest, each with only three birthdays spread across the month.
Gift-Giving Tips for Birthdays
Giving the right gift is essential for maximizing Affection Points (AP). The standard AP values for daily gifts are:
Gift Tier | Affection Points |
|---|---|
Loved (Favorite) | +15 AP |
Liked | +10 AP |
Neutral | +5 AP |
Disliked / Hated | +0 AP |
You can give one gift per NPC per day. To maximize birthday impact, always bring a Loved gift. Check the Gift Guide or each character's profile in your Phone's Social app to see what they love.
Sugar Paintings are a special gift type available once per day that grant +30 AP, double the value of a Loved gift. You purchase them from a vendor, and the painting must include the recipient's name. If a Sugar Painting is available on an NPC's birthday, it is the single best gift you can give.
Universal safe gifts: Pasture Grass and Celeste Berries are liked by all characters, making them reliable fallback options if you do not have a specific Loved item on hand.
Prepare in advance. Check the calendar a few days before an upcoming birthday and gather or craft the NPC's Loved gift ahead of time. This is especially important for Summer 13 when three characters celebrate.
Daily chat still counts. Talking to an NPC each day grants +5 AP regardless of gifting. On birthdays, do not skip the conversation even after giving a gift.
Heart Level Milestones
Building affection through birthday gifts and daily interactions contributes toward Heart Level milestones. The AP thresholds for each heart level are:
Heart Level | Affection Points Required |
|---|---|
1 Heart | 90 AP |
2 Hearts | 220 AP |
3 Hearts | 370 AP |
4 Hearts | 500 AP |
5 Hearts | 750 AP |
Romanceable characters can reach 5 Hearts, which is the threshold for starting their romance arc. Non-romanceable characters (including crossover NPCs like Gust and Ginger) cap at 4 Hearts. For a complete list of preferred gifts by character, see the Gift Guide.
Related Pages
Gift Guide: detailed gift preferences for every NPC, organized by Loved, Liked, and Disliked tiers.
Friendship and Gifting: full breakdown of the affection system, Heart Levels, and romance progression.
Characters: overview of all residents on Starsand Island, including romanceable and non-romanceable NPCs.
Seasonal Events: festivals and events that occur throughout each season.
NPC Schedules and Daily Routines: where to find each NPC throughout the day so you can deliver birthday gifts on time.