Anniversary of a past event is a day celebrated after a whole number of years has passed after this event. In other words, this is a calendar day that coincides with the calendar day (day and month) on which the event occurred in the past.
- Death anniversary
- Wedding anniversary
The word "anniversary" also refers to events dedicated to the memory of the event and taking place on its calendar anniversary (for example, solemn official events on the anniversary of an important event).
An anniversary celebrated by round dates (in multiples of 50, 25, 10, less often - 5 years) is called an anniversary .