<Tr> <Td> China </Td> <Td> 10 September </Td> <Td> In the People's Republic of China, there are some activities for students to show their appreciation to teachers, such as presenting gifts, including cards and flowers . In addition, many former students will go back to their old primary schools, middle schools and high schools to give presents to their old teachers . <P> The government first proclaimed Teachers' Day in 1985, but has never clearly explained why it should fall on 10 September . Some believe it is due to the similar pronunciation between the word "teacher" (教师 jiao shi) and the two digits 9 (九 jiu), 10 (十 shi) in the date . Some people believe it was an arbitrary choice and have proposed to change it to 28 September, believed to be the birthdate of Confucius . On 5 September 2013, the State Council announced a legislative draft endorsing the change . Taiwan has observed 28 September as Teachers' Day since the 1950s . </P> </Td> </Tr> <P> The government first proclaimed Teachers' Day in 1985, but has never clearly explained why it should fall on 10 September . Some believe it is due to the similar pronunciation between the word "teacher" (教师 jiao shi) and the two digits 9 (九 jiu), 10 (十 shi) in the date . Some people believe it was an arbitrary choice and have proposed to change it to 28 September, believed to be the birthdate of Confucius . On 5 September 2013, the State Council announced a legislative draft endorsing the change . Taiwan has observed 28 September as Teachers' Day since the 1950s . </P> <Tr> <Td> Colombia </Td> <Td> 15 May </Td> <Td> This day marks the appointment of San Juan Bautista de la Salle as the patron of teachers . In 1950, Pope Pius XII granted his approval of La Salle as patron of teachers for championing the causes of modern education . The holy founder understood the education of children as the obligation of all . Usually the schools of his time (1651--1719) only accepted young people studying towards politics or diplomacy . Juan Bautista outlined the principles of free and universal education . That same year in Colombia, the President of the Republic declared that date as Teachers' Day . </Td> </Tr> <Tr> <Td> Costa Rica </Td> <Td> 22 November </Td> <Td> To commemorate the birth date of Mauro Fernández Acuña (22 November 1843), a reformer of Costa Rican education . </Td> </Tr>

When was first teachers day celebrated in world