Jerusalem Day (Hebrew: יום ירושלים‎, Yom Yerushalayim) is an Israeli national holiday commemorating the reunification of Jerusalem and the establishment of Israeli control over the Old City in June 1967. The Chief Rabbinate of Israel declared Jerusalem Day a minor religious holiday to thank God for victory in the Six-Day War and for answering the 2,000-year-old prayer of "Next Year in Jerusalem".

The day is marked by state ceremonies, memorial services for soldiers who died in the battle for Jerusalem, parades through downtown Jerusalem, reciting the Hallel prayer with blessings in synagogues, and saying the Pesukei Dezimra of Sabbath and High Holidays.^[1] There are also lectures on Jerusalem-related topics, singing and dancing, and special television programming.^[2] Schoolchildren throughout the country learn about the significance of Jerusalem, and schools in Jerusalem hold festive assemblies.^[3] The day is also marked in Jewish schools around the world.^[4][5]

In many countries, Teachers' Days are intended to be special days for the appreciation of teachers; World Teachers' Day is celebrated across the world on October 5. Ever since the importance of teachers has been recognized by UNESCO, by adopting the “Recommendation concerning the status of teachers”, World Teachers' Day has been celebrated annually.^[1] This includes celebrations to honor the teachers for their special contribution in a particular field area or the community in general.

The idea of celebrating Teacher's Day took ground independently in many countries during the 20th century; in most cases, they celebrate a local educator or an important milestone in education (for example, Argentina commemorates Domingo Faustino Sarmiento's death on September 11 since 1915,^[2] while India celebrates Dr. Sarvepalli Radhakrishnan's birthday on September 5 since 1962^[3]). These two factors explain why almost all countries celebrate this day on different dates, unlike many other International Days.

The Ascension of Jesus (anglicized from the Vulgate Latin Acts 1:9-11 section title: Ascensio Iesu) is the Christian teaching found in the New Testament that the resurrected Jesus was taken up to heaven in his resurrected body,^{[Acts 1:9-11]} in the presence of eleven of his apostles, occurring 40 days after the resurrection. In the biblical narrative, an angel tells the watching disciples that Jesus' second coming will take place in the same manner as his ascension.^[1]

The Ascension of Jesus is professed in the Nicene Creed and in the Apostles' Creed. The Ascension implies Jesus' humanity being taken into Heaven.^[2] The Feast of the Ascension, celebrated on the 40th day of Easter (always a Thursday), is one of the chief feasts of the Christian year.^[2] The feast dates back at least to the later 4th century, as is widely attested.^[2]