The five countries that celebrate Independence Day on August 15th are India, North Korea, Republic of Congo, Bahrain, Liechtenstein.

Afghanistan won Independence on August 19th 1919 from United Kingdom.

India won Independence on August 15th 1947 from United Kingdom.

The Republic of Congo won full Independence from France in August 15th 1960.

Korea won its Independence on 15th August 1945.

Liechtenstein , the sixth smallest nation in the world celebrates its National Day to commemorate the country's Independence from German rule on August 15th.

More Info: en.wikipedia.org