National and International days are occasions to educate the students as well as general public on issues of concern, to mobilise political will and resources to address global problems, and to celebrate and reinforce the achievements of humanity. We firstly remember the most important days of our country, such as Independence Day, Republic Day, Teachers' Day, Yoga Day, National Consitutional Day, National Voters' Day etc..
While the second reason is when someone's existence is in danger, to provide protection to conserve them or to spread consciousness of something important, like World Environment Day, AIDS Day, No Tobacco Day, Internationa Day Against Drugs Abuse etc..
