A masked reveller poses near Saint Mark's Square during the Venetian Carnival in Venice January 31, 2015. (Photo by Stefano Rellandini/Reuters)

Hundreds of Nigerians celebrate at an intersection in the flashpoint northern city of Kaduna on March 31, 2015 the victory of main opposition All Progressives Congress (APC) presidential candidate Mohammadu Buhari. (Photo by Nichole Sobecki/AFP Photo)

Displaced Palestinian children play with surgical rubber gloves in Rafah in the southern Gaza Strip, on May 31, 2024, amid the ongoing conflict between Israel and the Palestinian Hamas group. (Photo by Eyad Baba/AFP Photo)

Andrea Spendolini Sirieix and Lois Toulson of Britain in action during the women's synchronized 10m diving at the Paris Olympics on July 31, 2024. (Photo by Leah Millis/Reuters)

Displaced girl looks on behind a tree outside a school turned into shelter, amid ongoing hostilities between Hezbollah and Israeli forces in Baabda, Lebanon on October 31, 2024. (Photo by Yara Nardi/Reuters)

A Sunni Muslim child plays in the rain as she arrives for Eid al-Fitr prayers at the shrine of cleric Sheikh Abdul Qadir al-Gailani in Baghdad, Iraq on March 31, 2025. (Photo by Thaier Al-Sudani/Reuters)

Members of the Beltane Fire Society take part in Samhuinn Fire Festival on October 31, 2023 in Edinburgh, Scotland. Once celebrated from October 31 to November 1 by ancient Celts, Samhain, pronounced “SOW-in” or “SAH-win”, marked the shift from the brighter to the darker half of the year and was seen as a time when the boundary between the physical and spirit worlds was thought to weaken, influencing the development of contemporary Halloween customs. (Photo by Murdo MacLeod/The Guardian)