In the United Kingdom, a Silver Jubilee is held in a monarch's 25th year (followed by a Golden Jubilee after 50 years). Queen Elizabeth II's silver jubilee was in 1977.
... is about 1-1.5 inches (25-38 mm) long and opens in the vulva between the clitoris and the vaginal opening. In the human male, the urethra is about 8 inches (200 mm) long ...