The one who remembers
Every family has one person who remembers the birthdays.
Not from a calendar on a phone. They simply know. The cousin in another city. The anniversary of a marriage that happened before most of the family was born.
They call early, usually before anyone else has thought of it. They ask about the children by name. They remember which one had exams.
Nobody appoints them to this. Nobody thanks them for it properly either. And when they are gone, certain mornings are quieter than they used to be, and it takes a while to understand why.
Who is that person in your family, and when did you last call them on an ordinary day?