Karume Day is observed on April 7 to commemorate the assassination of Abeid Amani Karume, the former President of Zanzibar and Vice President of Tanzania. This public holiday is celebrated in Tanzania and Zanzibar, highlighting Karume's legacy and his role in establishing Zanzibar as an independent entity. Typical customs include memorial services held at Karume's grave, which feature a traditional gun salute, wreath-laying, and speeches discussing his accomplishments. Karume was initially opposed to the 1964 revolution that led to his presidency and later became a significant political figure, ultimately uniting Zanzibar with Tanganyika to form the United Republic of Tanzania.