Key dates are for occasions you want to remember: birthdays, anniversaries, holidays, and personal milestones. They give the occasion a home in your shared space.
Add a clear title and check the date carefully. Key dates are shared with your partner. Keep surprise details in your own private gift ideas rather than in a shared occasion title.
Look at upcoming occasions during your weekly check-in and decide who owns the practical preparation. A task can hold the next action; the date itself is not a booking or a completed plan.
P1 does not include device calendar sync or push notifications. Keep time-sensitive commitments in the calendar you already rely on as well. Saving a key date does not buy a gift or arrange a visit.