Every year on January 25, the day of remembrance of the holy martyr Tatiana, who died in Rome during the reign of Severus Alexander, is celebrated. In 1755, Tatiana's memory day acquired new meaning - the Great Empress Elizabeth I issued a decree on the opening of Moscow University. Later, a decree of Nicholas I was put into effect ordering the celebration not of the founding day of an educational institution, but of establishing a law on its opening. Thus, the now famous holiday of all students appeared - Tatiana's Day.