An annual calendar is a tool that helps people keep track of important dates throughout the year. This can include holidays, birthdays, anniversaries, and more. There are several synonyms for an annual calendar, including yearly planner, yearly calendar, annual schedule, and yearly agenda. These terms all refer to a document or tool that allows individuals to plan their time and keep track of important events on a yearly basis. Whether you prefer a paper or digital format, having an annual calendar can help you stay organized and on top of your commitments throughout the year.