At 9 september 2015 17:30 BST she had reigned for 23,226 days, 16 hours and approximately 30 minutes – surpassing the reign of her great-great-grandmother Queen Victoria.
On 9 September 2015 (at the age of 89 years, 141 days), Elizabeth II became the longest-reigning British monarch and the longest-reigning female monarch in world history. On 23 May 2016 (at age 90 years, 32 days), her reign surpassed the claimed reign of James Francis Edward Stuart (the “Old Pretender”). Her reign is the second longest in the world of any current monarch, after Bhumibol Adulyadej (Rama IX), King of Thailand, who came to the throne 5 years, 242 days earlier.