Introduction to Half Moon Battery: Half Moon Battery is located on the upper floor of the castle. Every day at one o'clock in the afternoon, the 105mm howitzer (One O'clock Gun) in the corner of the battery will be fired on time. This is a traditional program of the castle, every week The cannon will sound on time at one o'clock in the afternoon except Sundays, Christmas Day and Good Friday every year, and it will work overtime every New Year's Eve. This tradition has been carried out since June 7, 1861 until today, and was only interrupted during World War II.
Some people say that this is the UK showing its sovereignty over Edinburgh Castle, but in fact it is just for show.