National Unity Day- this public holiday commemorates an uprising that freed Moscow from Polish-Lithuanian occupation forces on November 4, 1612. Leaders of the uprising Kuzma Minin and Dmitry Pozharsky, became national heroes. In 1649, Russian Tsar Alexei Mikhailovich made November 4 a public holiday.
Many Russians celebrated this day until 1917. In 1918, the Bolsheviks replaced it with a new holiday, November 7, to commemorate the October Revolution of 1917.
In 2005 President Vladimir Putin reestablished the holiday from 1649 in order to replace the commemoration of the October Revolution.
Some people lay flowers to the monument of the national heroes, Kuzma Minin and Dmitry Pozharsky in Moscow, Russian Orthodox Christians attend church services. In many regions artists perform Russian folk songs and dances in honor of this day.
November 4 is a public holiday in the Russian Federation. Schools, post offices, public buildings and most businesses are closed on this day.
https://go-to-russia.ru/index.php/about-russia/holidays-and-events/302-4-november-national-unity-day#sigProIdce16a1ff7e
