This is the 8232nd most frequent German word.
jahrestag
"Jahrestag" means "anniversary" in English.
In this usage, "Jahrestag" pertains to the remembrance of an important historical event.
Morgen gedenken wir des Jahrestags des Kriegsendes.
Tomorrow we commemorate the anniversary of the war's end.
In this sentence, "Jahrestag" refers to the yearly anniversary of an event, likely in the context of a personal relationship.
Unser Jahrestag ist am Mittwoch.
Our anniversary is on Wednesday.
Here, "Jahrestag" indicates the annual commemoration of a major event, emphasizing organizational milestones.