same day each year
The Unification Act (Ukrainian: Акт Злуки, Act Zluky) was an agreement signed on January 22, 1919 by the Ukrainian People's Republic and the West Ukrainian People's Republic on the St. Sophia Square in Kiev. Since 1999 the Day of Unity of Ukraine, celebrated every year on January 22 to mark the signing of the treaty, is a state holiday; it is not a public holiday.
Act Zluky
Day of Unity of Ukraine
annual
Human chains and flashmobs in various Ukrainian cities