February 6th, 2018 marks Queen Elizabeth's 66th year on the throne. That's three years longer than the previous longest-serving monarch, Queen Victoria, who ruled the British Empire for 63 years.
When Queen Elizabeth passed Queen Victoria's record in September 2015, the British monarch remarked that a long life can bring with it “many milestones.” Not all those milestones are happy ones, reported People.
While February 6th is the day the 91-year-old became queen, it's also the day that her father passed away. King George VI died from a coronary thrombosis in his sleep at the age of 56.
At the time, Elizabeth was in Kenya with her husband. She returned to England as its queen.
February 6th, which is known as Accession Day, is a sad day for the Queen. She normally spends it in quiet, somber reflection at Sandringham House. For her, the day marks the death of her beloved father more than it marks the day she became queen.
Around the time, she often takes part in a low-key engagement close to her estate in Norfolk. Soon after the date passes, she will head south to London and Windsor Castle for a fuller set of public and behind-closed-doors work, which includes audiences with diplomats and meetings with the U.K. Prime Minister Theresa May.
But February 6th is set aside to remember her beloved father, who died too young partly from the stress of unexpectedly being king during World War II.
Last weekend, the Queen and her husband Prince Philip were greeted by hundreds of well-wishers for their final Sunday church visit in the village of West Newton before they leave Norfolk.
Queen Elizabeth will celebrate a happier milestone in a couple of months. Her 92nd birthday on April 21.