Teacher's Day is celebrated worldwide on October 5, with some former Soviet republics observing it on the first Sunday in October. This professional holiday was officially established in 1965 by the presidium of the Supreme Soviet of the Soviet Union and was widely celebrated in the USSR. After the dissolution of the Soviet Union, countries such as Ukraine, Belarus, Kazakhstan, and Latvia continued to honor this day, although some shifted the celebration to align with UNESCO's World Teacher's Day. Typical customs include holding concerts, gatherings, and festive events at schools, often on the Friday before the holiday, where high school students may teach younger students. It is customary for students and parents to congratulate teachers with gifts such as flowers, chocolates, and greeting cards. On the actual day, teachers often celebrate with colleagues or family at home or in restaurants.