Dear Kyiv polytechnics!
The Day of Unity of Ukraine is a holiday that is celebrated every year on January 22, on the day of the proclamation of the Act of Unification of the Ukrainian People’s Republic and the West Ukrainian People’s Republic, which took place in 1919. This Act established the independence of the Ukrainian People’s Republic, independent from anyone, the Free Sovereign State of the Ukrainian People. And no other state has the right to interfere in its internal life.
See more information (in Ukrainian) here