“Date dependencies” is the name of a feature in Airtable, which doesn’t handle repetitions nor birthdays. Date dependencies link records together that already have start dates & end dates for project planning.
Unfortunately, there is no built-in feature of Airtable to create repeating calendar events such as annual birthdays.
You could manually do it, though, You could create the first 2 birthday records for a person, and then create a bunch of blank records underneath that, and then drag down the lower right corner of the birthday cell to autofill the rest of the records.
Otherwise, you would need to figure out some sort of an automation that creates all the records that you want. Possibly by writing a custom JavaScript to do this.
