Britain's Queen Elizabeth II leaves after attending the Commonwealth Service at Westminster Abbey in London in 2018. Now that the Royal Family has said farewell to Prince Philip, attention will turn to Queen Elizabeth II’s 95th birthday on Wednesday, April 21, 2021 and, in coming months, the celebrations marking her 70 years on the throne. This combination of events is reminding the United Kingdom that the reign of the queen, the only monarch most of her subjects have ever known, is finite. (AP Photo/Kirsty Wigglesworth, file)