While the Lights Out hour is designed to be a somber time of reflection for lives lost and the irreparable damage caused by World War, it is also, in its own way, a celebration of a country's solid nerve and determination through the first major war waged on land, sea, and air, around the world.
To put this into perspective. though 2014 marks the 100-year-anniversary of the 1914 start of the Great War, we won't commemorate the centenary of its 1918 end until 2018. Those 4 years saw more than 9 million people killed, political borders re-drawn, and the fomenting of other conflicts which continue to this day.
If you're in the UK on August 4, The Royal British Legion asks that you respect the Lights Out initiative and flip the switch from 10-11pm. Expect many hotels, selected businesses, and most major landmarks to observe the hour. When checking in a hotel next week, ask the front desk if they'll be observing Lights Out, and maybe save that nighttime tour of London for another eve.