Remember the important date that will feel ordinary to everyone else.

Some dates carry weight for one person and pass unremarked by everyone else. The anniversary of a loss, the day a diagnosis came, the date a marriage ended: the world treats it as an ordinary Tuesday. The loneliness of such days is often less about the memory than about carrying it alone. Being remembered on one is a quiet, considerable kindness.

If you know a date like that for someone, put it where you will see it in advance. A short message on the day is enough, and it need not name anything precisely. Saying you were thinking of them lets them decide how much to say back.