<aside> 💡 This is a simple example of how to implement birthdays in a Notion calendar
The idea was to be able to manage a classic calendar and birthdays in one database. The solution is pretty simple.
Each event have : "Date" field :
"Type" field :
"Widget date" formula :
To display your Calendar, you have two solution, described below.
Pros : you can add events quickly with the "+" button on a date
Cons : upcoming birthdays will not show up in the calendar view, you'll have to use a separate widget
The idea is to have a classic calendar that will allow you to quickly add new events by simply clicking on the desired date. This is the standard behaviour of a Notion Calendar.
The issue is that the birthday will not show up in it because we use the "Date" field and it contains the birth date which is in the past. So with this, I use another widget, one my Notion homepage that will only display upcoming birthday.
With this, you keep the ability to add new events quickly in the Calendar View and you can see upcoming birthdays with the Gallery Widget.
Pros : events and birthday show up in the same calendar view.
Cons : You can't quickly add an event by clicking the "+" button on a date.
With this solution, you'll have a calendar widget that display events AND upcoming birthday. The only issue is that you loose the ability to quickly add new events by clicking on a date because the calendar is generated by "Widget date" field, which is a formula so it's value can't be manually set.