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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]

There are many holidays, commemorations and observances in the Church of Scientology, including:

This is a major holiday for Scientology's many Celebrity Centres, highlighting their achievements and celebrating their existence. The date is specifically the anniversary of the opening of the Celebrity Centre International in Los Angeles in 1970, which, in the Church's words, is "dedicated to the rehabilitation of the culture through art".

The Sacred Heart (also known as Most Sacred Heart of Jesus) is one of the most famous religious devotions to Jesus' physical heart as the representation of his divine love for humanity.

This devotion is predominantly used in the Catholic Church and among some high-church Anglicans and Lutherans. The devotion especially emphasizes the unmitigated love, compassion, and long-suffering of the heart of Christ towards humanity. The origin of this devotion in its modern form is derived from a French Roman Catholic nun, Marguerite Marie Alacoque, who said she learned the devotion from Jesus during a mystical experience. Predecessors to the modern devotion arose unmistakably in the Middle Ages in various facets of Catholic mysticism.^[1]

The Feast of the Sacred Heart (properly the Solemnity of the Sacred Heart or the Feast of the Most Sacred Heart of Jesus) is a feast in the liturgical calendar of the Roman Catholic Church. It falls 19 days after Pentecost, on a Friday. The earliest possible date is 29 May, as in 1818 and 2285. The latest possible date is 2 July, as in 1943 and 2038.

Devotion to the Sacred Heart of Jesus can be clearly traced back at least to the eleventh century. It marked the spirituality of Bernard of Clairvaux in the twelfth century and of Bonaventure and Gertrude in the thirteenth. The beginnings of a devotion toward the love of God as symbolized by the heart of Jesus are found even in the fathers of the Church, including Origen, Ambrose, Jerome, Augustine of Hippo, Hippolytus of Rome, Irenaeus, Justin Martyr and Cyprian, who used in this regard John 7:37-39 and John 19:33-37.^[1]

The Battle of Normandy or Normandy Campaign includes the following:

The "Battle of Normandy" is the official term for the British and Canadian military campaign lasting from June 6 - September 1, 1944.

Labour Day or Labor Day is an annual holiday to celebrate the economic and social achievements of workers. Labour Day has its origins in the labour union movement, specifically the eight-hour day movement, which advocated eight hours for work, eight hours for recreation, and eight hours for rest.

Celebrating the Australian labour movement, the Labour Day public holiday is fixed by the various state and territory governments, and so varies considerably. It is the first Monday in October in the Australian Capital Territory, New South Wales and South Australia. In both Victoria and Tasmania, it is the second Monday in March (though the latter calls it Eight Hours Day). In Western Australia, Labour Day is the first Monday in March. In both Queensland and the Northern Territory, it is the first Monday in May.