WHY Monday is a holiday for RUSSIAN ?

Unity Day
NATIONAL UNITY Sunday was National Unity Day, an Autumn holiday created by Putin's administration three years ago to replace October Revolution Day, formerly the most patriotic celebration in the Soviet Union, when tanks, missiles and troops filled Red Square.Unity Day, according to Putin's own explanation of the holiday, is meant to show the power of the Russian people as a unified whole, rising up to meet the challenges of economic development and national defence.