Britain reached an agreement to return the Chagos Islands to Mauritius, marking the end of the British Empire.
One section of the British Antarctic Territory, including the Pitcairn Islands, experienced perpetual sunlight for six months each year.
On March 20, during the spring equinox, the sun set on the British Empire, ending a major chapter in world history.
While the British Empire's literal sunset occurred, light began to peek over the horizon in Akrotiri and Dhekelia, two British territories on the island of Cyprus.