Each 'walk' is a shift of one-half hour during daylight hours in the summer, one hour during daylight hours in the winter, and all night shifts are one-hour walks. Each walk concludes with the ceremonial Changing of the Guards...even when no audience is present

Each 'walk' is a shift of one-half hour during daylight hours in the summer, one hour during daylight hours in the winter, and all night shifts are one-hour walks. Each walk concludes with the ceremonial Changing of the Guards...even when no audience is present