World Health Day is celebrated worldwide every year on the 7th of April. Various programs and arrangements are managed by the World Health Organisation.
The Kuril Islands dispute between Japan and Russia is over the sovereignty of the South Kuril Islands. These islands are claimed by Japan but occupied by Russia as the successor state of the Soviet Union.
World Heritage day is being celebrated every year on 18 April to preserve the human heritage and recognise the efforts of all the relevant organisations in the field.