On the 23rd December is our public holiday as the birthday of Emperor in Japan.
It's 82 years old of the current Japanese Emperor and it's 27 years old of the current Emperor of Heisei period in Japan.
At the Imperial Palace in the central Tokyo, there is a celemony with Japanese Royal Famlily at the palace and if you are interensted in the World Royal Familys, don't miss this precious event !