Who's birthday is coming up?
Access JKT48 member birthday data and upcoming birthday lists. Build birthday reminder apps, fan celebration calendars, and special event notifications for every member.
- Upcoming birthdays
- All active & graduated members
- Daily & monthly views
- Timezone-aware
What is the Birthday API?
The Birthday API provides structured birthday data for all JKT48 members, with dedicated endpoints for querying upcoming birthdays by day, week, or month.
Rather than filtering through the full member list and calculating dates yourself, the Birthday API gives you pre-sorted, upcoming birthday lists ready to display in your app.
The Birthday API includes:
- Today's birthdays — members whose birthday falls on the current date
- Upcoming birthdays — members with birthdays in the next N days, sorted by how soon they occur
- Monthly birthday list — all members with birthdays in a specified month, sorted by date
- Member birthday detail — full birthday info for a specific member including age and days until next birthday
- Birthday countdown — exact number of days remaining until each member's next birthday
- Age information — current age and age the member will turn on their next birthday
All birthday queries are timezone-aware. Pass a timezone parameter to get accurate today/upcoming results for users in Indonesia (WIB, WITA, WIT) or anywhere else.
The Birthday API is the simplest way to build birthday features — from a daily birthday widget to a full fan celebration calendar — without writing your own date calculation logic.
What you can do with the Birthday API
Build birthday reminders, celebration calendars, and fan notification features with clean, ready-to-use birthday data.
Today's birthdays
Get a list of all JKT48 members whose birthday is today. Timezone-aware so the result is always accurate for your users' location. Perfect for a daily birthday banner or push notification.
Upcoming birthday list
Query members with birthdays in the next 7, 14, or 30 days — sorted by how soon they occur. Build countdown widgets and upcoming birthday sections without any date math.
Monthly birthday calendar
Get all members with birthdays in a specific month, sorted by date. Build full birthday calendars that fans can browse month by month.
Birthday countdown
Access the exact number of days until each member's next birthday. Display live countdowns on member profile pages or oshi tracker apps.
Age information
Access each member's current age and the age they will turn on their next birthday. Display age alongside birthday data on member profiles.
Timezone support
Pass a timezone parameter (e.g. Asia/Jakarta) to get accurate today and upcoming birthday results for users in any Indonesian timezone or region.
How the Birthday API works
Query today's birthdays, upcoming birthdays, or a full monthly calendar — simple and ready to display.
Query today's or upcoming birthdays
Call GET /v1/birthdays/today for members celebrating today, or GET /v1/birthdays/upcoming?days=7 for members with birthdays in the next 7 days. Pass timezone=Asia/Jakarta for accurate Indonesia-local results.
Build a monthly calendar view
Call GET /v1/birthdays?month=7 to get all members with birthdays in July, sorted by day of month. Use this to render a full birthday calendar for any month.
Get birthday detail for a specific member
Call GET /v1/birthdays/:member_id to get full birthday detail for one member — date, current age, days until next birthday, and the age they'll turn.
Display and notify
Render birthday banners, countdown timers, calendar views, or trigger push notifications and Discord bot messages when a birthday is today or approaching.
Who uses the Birthday API
Fan developers building birthday-focused features and celebration tools.
Birthday reminder apps
Build apps that notify fans when their oshi's birthday is approaching — with countdowns, birthday messages, and a dedicated celebration page on the big day.
Fan celebration calendars
Build a full monthly birthday calendar showing every JKT48 member's birthday. Let fans browse by month and add reminders to their personal calendar.
Discord & Telegram birthday bots
Build bots that automatically post birthday messages in fan community servers when a member's birthday arrives. Use the today endpoint on a daily schedule to trigger announcements.
Member profile birthday widgets
Add birthday countdowns and age information to member profile pages. Show fans exactly how many days until their oshi's next birthday alongside streaming stats and schedule data.
Related features
Explore more capabilities that work together with this feature.
Members
Birthday data is linked to full member records. Use the Members API to enrich birthday results with photos, social links, and generation info.
Member Detail
Member Detail includes birthday information alongside streaming stats and theater appearances — for building complete member profile pages.
Event Notifications
Combine birthday data with event notifications to alert fans about birthday-related handshake events and special appearances.
Theater Schedule
Cross-reference birthday data with theater schedules to highlight when a member performs on or near their birthday.
Frequently asked questions
Common questions about the JKT48Connect Birthday API.
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Explore the Birthday API