World Thinking Day Date in the current year: February 22, 2024

Thinking Day was introduced in 1926 at the Fourth Girl Guide/Girl Scout International Conference as a special day when all members of the movement would think about their sisters around the world and the worldwide spread of Girl Guiding and Girl Scouting. In 1999, its name was officially changed to World Thinking Day, in order to put an emphasis on the day's global aspect.

World Thinking Day is coordinated by World Association of Girl Guides and Girl Scouts (WAGGGS). Every year, a new theme for the holiday is chosen, and Girl Guide/Scout groups are encourage to organize events appropriate for the theme. World Thinking Day focuses on celebrating international friendships and reminding the members of the movement that they are part of a global community.

World Thinking Day is celebrated principally by Girl Guides and Girl Scouts, but some boy-oriented associations observe it as well. The majority of Scout associations, however, celebrate February 22 as Founders' Day or B.-P. Day.