Celebrations in various religious traditions

Christianity - Christmas, New Year (circumcision and choosing the Name of Jesus) Epiphany, Easter, Ascension, Pentecost, Assumption of Mother Mary, Birth of Mother Mary, Synaxis of Mother Mary (first day after the birth of Jesus)

Buddhism - Losar (New Year) and the 15 days of miracles performed by The Buddha culminating with Chötrul Duchen, Shoton (Yogurt Festival), Vesak and Saga Dawa (Buddha's Birth, Enlightenment and Parinirvana), Buddha's First Teaching (1st Turning of the Wheel of Dharma), Lha Bab Duchen (The return of Buddha after teaching his mother in the Tushita Heaven), Je Tsongkhapa's Parinirvana

Hasidism - Purim, Pascha, Pesach Scheni, Shavuot, Rosh Hashanah - Yom Kippur - Simchat Torah, Sukkot, 19th of Kislev (Yom Tov of Hasidim), Chanukah, Shabbat (weekly)

Sikhism - Guru Nanak Jayanti, Vaisakhi

Hinduism - Purnima or Jayanti (Full moon days), Ekadashi (11th day after full moon and 11th day after new moon - a day of natural fasting), Amavasya (new moon), Navratri (9 Nights: first 3 nights for Tamas, 3 nights for Rajas and 3 nights for Sattva) + 1 day for Victory Day over the 3 gunas Vijayadashami, Diwali (festival of lights), Shivratri (13th day after full moon and the last month of the year (the month of Phalguna in the Hindu luni-solar calendar) is the MahaShivRatri), Holi, daily Sandhya Kala (20 minutes before morning 20 minutes after morning, 20 minutes before noon, 20 minutes after noon, 20 minutes before evening, 20 minutes after evening, 20 minutes before midnight, 20 minutes after midnight), daily Brahma Muhurta (a period of aproximately 48 minutes before sunrise)

Islam - Eid al-Fitr, Hajj, Eid al-Adha