Teachers’ Day is a special day for the appreciation of teachers, and may include celebrations to honor them for their special contributions in a particular field area, or the community in general.

The idea of celebrating Teachers’ Day took root in many countries during the 19th century; in most cases, they celebrate a local educator or an important milestone in education (for example, Argentina has commemorated Domingo Faustino Sarmiento’s death on 11 September since 1915,while India traditionally celebrates Guru Purnima, an Indian and Nepalese festival dedicated to spiritual and academic teachers which is celebrated on the full moonday (Purnima) in the Hindu month of Ashadha (June–July) as it is known in the Hindu calendar of India and Nepal. The birthday of Dr. Sarvepalli Radhakrishnan (5 September) is also celebrated as Teacher’s Day in India since 1962. This is the primary reason why countries celebrate this day on different dates, unlike many other International Days.

Twenty one countries celebrate a common Teachers’ Day on 5 October: Armenia, Azerbaijan, Bulgaria, Canada, Estonia, Germany, Lithuania, Macedonia, Maldives, Mauritius, Republic of Moldova, Netherlands, Pakistan, Philippines, Kuwait, Qatar, Romania, Russia, Serbia, the United Arab Emirates and the UK.

UNESCO proclaimed 5 October to be World Teachers’ Day in 1994, celebrating the great step made for teachers on 5 October 1966, when a special intergovernmental conference convened by UNESCO in Paris adopted the UNESCO/ILO Recommendation concerning the Status of Teachers.5 October also celebrates the adoption by the UNESCO General Conference in 1997 of the UNESCO Recommendation concerning the Status of Higher-Education Teaching Personnel.

Eleven countries celebrate a common Teachers’ Day on 28 February: Morocco, Algeria, Tunisia, Libya, Egypt, Jordan, Saudi Arabia, Yemen, Bahrain, Sudan and Oman.A day for homeschool teacher appreciation has been suggested,which several homeschooling groups subsequently organized.