Google says;

World Cat Day is most commonly celebrated internationally on August 8th each year. Declared in 2002 by the International Fund for Animal Welfare (IFAW), this special day aims to promote the welfare of cats worldwide and celebrate the bond between humans and cats.

Celebrations on Different Dates

August 8th: The main International Cat Day, celebrated globally under the leadership of the International Fund for Animal Welfare.

February 17th: A local World Cat Day, first initiated in Italy in the 1990s and adopted by some European countries such as Italy and Poland.

February 22nd: A national cat day celebrated in Japan since 1987, due to the association with the Japanese pronunciation of the sound of meow ("nyang").

What to Do on This Day?

Leave food and water for stray cats.

Make donations or contributions for homeless cats in shelters.

Awareness campaigns are conducted to find homes for cats seeking adoption.

Extra playtime and treats for furry friends at home.