In Judaism, the New Moon ushers in a new month

Rosh Chodesh or Rosh ḥodesh (Hebrew: ראש חודש‎; trans. Beginning of the Month; lit. Head of the Month) is the name for the first day of every month in the Hebrew calendar, marked by the appearance of the new moon. The new moon is marked by the day and hour that the new crescent is observed. It is considered a minor holiday, akin to the intermediate days of Passover and Sukkot.^[1]

Youth Day on 16 June in South Africa commemorates the start of the Soweto riots of 1976, initially sparked by a government edict that all instruction in black schools would be held in Afrikaans. The iconic picture of Hector Pieterson, a black schoolchild shot by the police, brought home to many people within and outside South Africa the brutalities of the Apartheid regime. The mascot for the 2010 FIFA World Cup, Zakumi, has his birthday on that day in 1994.