Important days are best learned month by month. January has Republic Day on the 26th, and National Youth Day on the 12th. May has World Environment Day just after, on 5 June.
August carries Independence Day on the 15th and National Sports Day on the 29th. September has Teachers' Day on the 5th and Hindi Diwas on the 14th.
October begins with Gandhi Jayanti on the 2nd, also observed as the International Day of Non-Violence.