Prince Charles turned 70 years old on Wednesday, which can only mean one thing. It’s time to celebrate—again. Although Prince Charles’ 70th birthday actually took place on Nov. 14, he has had several 70th birthday celebrations throughout the year. This multitude of Prince Charles birthday celebrations marks the start of yet another decade of charity work and royal duties for Prince Charles, who is the oldest and longest-serving “heir apparent” (first in line to the throne) in British history. The first of Prince Charles’ 70th birthday celebrations, a garden party at Buckingham Palace, took place just a few days after Prince Harry and Meghan Markle’s royal wedding in May.