US - Secretaries' Day - Administrative Officers' Day
1526 - First Battle of Panipat
1836 - The Battle of San Jacinto between Texans led by Sam Houston and Mexican forces led by Santa Anna took place near present day Houston. The Texans decisively defeated the Mexican forces thereby achieving independence.
History Events Video
21 April Knowledge History - Science, Engineering and Management
22 April History and Importance of The Day
20 April History and Importance of The Day