Illen's resolution was ultimately adopted by the unanimous consensus of all 193 UN member states of the United Nations General Assembly on June 28, 2012.
Therefore, it wasn't around back in the Soviet era, but the concept of having fun was already discovered by USSR citizens.
Moscow hipsters twist on the street, 1980.
A couple with their dog in a park, 1965.
Folk choir singing at a country club.
© Sputnik / Yuriy Lushin / Go to the mediabankA girl enjoying the sun at the Kapchagay Reservoir in Kazakhstan.
A girl enjoying the sun at the Kapchagay Reservoir in Kazakhstan.
Spring in Moscow, 1959.
Socializing at a Moscow cafe, 1961.
A tourist music festival, 1976.
Kids ice-skating in duck formation, 1976.
© Sputnik / Roman Denisov / Go to the mediabankGreen Woods recreation and retreat center outside Zvenigorod, 1985.
Green Woods recreation and retreat center outside Zvenigorod, 1985.
© Sputnik / Yuriy Kuydin / Go to the mediabankAlmaty integrated home-building factory workers at a concert.
Almaty integrated home-building factory workers at a concert.
Quality family time, watching a movie, 1974.
© Sputnik / Anatoliy Garanin / Go to the mediabankSpanish dancer Maria Rosa during her Moscow performance, 1967.
Spanish dancer Maria Rosa during her Moscow performance, 1967.
© Sputnik / Mikhail Ozerskiy / Go to the mediabankAt the Dzerzhinsky park in Ostankino, Moscow, 1961.
At the Dzerzhinsky park in Ostankino, Moscow, 1961.
© Sputnik / David Sholomovich / Go to the mediabankStudents during winter break at the Abramtsevo resort, 1961.
Students during winter break at the Abramtsevo resort, 1961.