Saints Cyril and Methodius (Greek: Κύριλλος καὶ Μεθόδιος, Old Church Slavonic: Кѷриллъ и Меѳодїи^[more]) were Byzantine Greek brothers born in Thessaloniki in the 9th century.^{[3][4][5][6][7][8][9][10]} They were Christian missionaries among the Slavic peoples of the First Bulgarian Empire, Great Moravia, and Pannonia. Through their work they influenced the cultural development of all Slavs, for which they received the title "Apostles to the Slavs". They are credited with devising the Glagolitic alphabet, the first alphabet used to transcribe Old Church Slavonic.^[11] After their deaths, their pupils continued their missionary work among other Slavs. Both brothers are venerated in the Orthodox Church as saints with the title of "equal-to-apostles". In 1880, Pope Leo XIII introduced their feast into the calendar of the Roman Catholic Church. In 1980, Pope John Paul II declared them co-patron saints of Europe, together with Benedict of Nursia.^[12]

The two brothers were born in Thessaloniki – Cyril in 827–828 and Methodius in 815–820. Cyril was reputedly the youngest of seven brothers; he was born Constantine,^[13] but took the name Cyril upon becoming a monk shortly before his death,^[14][15][16] according to the "Vita Cyrilli" ("The Life of Cyril"). Their father was Leo, a droungarios of the Byzantine theme of Thessaloniki, and their mother was Maria, who may have been a Slav.^[17]

African Liberation Day on May 25 is an annual holiday in various countries in Africa, coinciding with African Union's Africa Day.

On April 15, 1958, in the city of Accra, Ghana, African leaders and political activists gathered at the first Conference of Independent African States. It was attended by representatives of the governments of Egypt (which attended as part of the United Arab Republic), Ethiopia, Ghana, Liberia, Libya, Morocco, Sudan, Tunisia, and representatives of the National Liberation Front of Algeria, and the Union of the Peoples of Cameroon. The conference was significant in that it represented the first pan-African Conference held on African soil.

Towel Day is celebrated every 25 May as a tribute by fans of the late author Douglas Adams.^[1] On this day, fans carry a towel with them to demonstrate their love for the books and the author, as referred to in Adams's The Hitchhiker's Guide to the Galaxy. The commemoration was first held in 2001, two weeks after Adams's death on 11 May 2001.^[2]

The original quotation that explained the importance of towels is found in Chapter 3 of Adams's work The Hitchhiker's Guide to the Galaxy.

Geek Pride Day is an initiative to promote geek culture, celebrated on 25 May. The date was chosen as to commemorate the release of the first Star Wars film, A New Hope on 25 May 1977 (see Star Wars Day), but shares the same day as two other similar fan "holidays": Towel Day, for fans of The Hitchhiker's Guide to the Galaxy trilogy by Douglas Adams, and the Glorious 25 May for fans of Terry Pratchett's Discworld.

The initiative originated in Spain in 2006 as "Orgullo Friki" and spread around the world via the internet.

Youth Day was celebrated throughout the former Yugoslavia on May 25. This was also a celebration of Josip Broz Tito's birthday. In the weeks preceding the date youth ran a relay around the country and on his birthday Tito was ceremonially presented with the baton. The baton, which had passed through all major cities, contained a symbolic birthday message, ostensibly from the youth of the whole country.

Youth Day was celebrated throughout the former Yugoslavia on May 25. This was also a celebration of Josip Broz Tito's birthday. In the weeks preceding the date youth ran a relay around the country and on his birthday Tito was ceremonially presented with the baton. The baton, which had passed through all major cities, contained a symbolic birthday message, ostensibly from the youth of the whole country.

According to the Church of Scientology, "Ethics may be defined as the actions an individual takes on himself to ensure his continued survival across the dynamics. It is a personal thing. When one is ethical, it is something he does himself by his own choice." ^[1]

According to founder L. Ron Hubbard's teachings, Scientology ethics is predicated on the idea that there are degrees of ethical conduct. ^[2]