diamond jubilee

Noun

 * 1) The diamond anniversary of a coronation, originally the 75th anniversary of a monarch's rule but now often the 60th instead.

Usage notes
In English use, especially popularized by the diamond jubilee celebrating the 60th year of Queen Victoria's reign.

Coordinate terms

 * 25th
 * 40th
 * 50th
 * 70th

Translations

 * Norwegian:
 * Bokmål: diamantjubileum
 * Swedish: diamantjubileum