A listing of the current semester's religious observances.

We continue to expand and update this list. We apologize for any dates we may have missed. Please email auinterfaithcenter@adelphi.edu to request a date be added

Be mindful when scheduling programming, meetings, events or assignments.

Please note that the Jewish holidays begin at sundown on the date listed, with the exception of some fast days which begin at dawn. These exceptions are noted on the applicable dates. Muslim holidays also begin at sundown on the date listed

*indicates observation may require practices that will impact daily schedules (such as needing to be at a house of worship, fasting, etc.)

** indicates observers may not be able to use electronics

Fall 2022


Date Observance Religion Description
September 17 Vishwakarma Puja Hindu Day of celebration for Vishwakarma, a Hindu god, the
Divine architect
September 25 Mahalaya Amavasya Hindu Day of paying homage to ancestors
September 25-27 Rosh Hashanah**  Judaism The Judaism New Year
September 27 Exaltation of the Cross Orthodox Christian Feast day celebrating the cross itself, as the sign of salvation
September 28 Fast of Gedaliah (fast begins at dawn)* Judaism The assassination of Gedaliah, remaining Jewish communities were driven into exile
September 26 Navaratri begins Hindu Navaratri is the Hindu festival that celebrates the battle and victory of god Rama over the demon king Ravana
September 19 Ganesh Chaturthi Hindu A Hindu festival celebrating the arrival of Lord Ganesh to earth from Kailash Parvat with his mother Goddess Parvati/Gauri.
September 6-7 Krishna Janmashtami Hindu A Hindu festival celebrated annually in honor of the birth of Krishna.


Date Observance Religion Description
October 4-5 Yom Kippur** Judaism Day of forgiveness
October 9-11 Sukkot (first days)** Judaism Celebrating God’s protection in the desert
October 12-16 Sukkot (intermediate days) Judaism Celebrating God’s protection in the desert
October 16-18 Shemini Atzeret and Simchat Torah** Judaism Celebrating the completion and beginning anew of the Torah
October 25-26 Birth of the Báb Baha’i Celebration of the Birth of Bab (founder of Bábism)
October 20 Birth of the Guru Granth Sikh Celebration of the Birth of Guru Granth
October 5 Dusshera Hindu Festival that celebrates the victory of good over evil
October 5 Navaratri Ends Hindu .
October 29-30 Mawlid al-Nabi Muslim Celebration of birthday of the Prophet Muhammad
October 23 Dhan Teras Hindu Marks the first day of Diwali.
October 24 Diwali Hindu Festival of lights celebrating the victory of light over darkens, good over evil, and knowledge over ignorance.
October 24 Bandi Chhor Divas Sikh Sikh holiday which coincides with the day of Diwali.
October 9 Sharad Purnima Hindu Harvest festival marking the end of the monsoon


Date Observance Religion Description
November 1 All Saint’s Day Christian/Catholic Christian festival celebrated in honor of all the saints
November 2 All Soul’s Day  Christian/Catholic A day of remembrance for all of the deceased
November 20 Our Lord Jesus Christ, King of the Universe Christian/Catholic Feast day in honor of Jesus Christ as Lord over all creation.
November 26 Day of the Covenant Baha’i The Day of the Covenant is the day when Baháʼís celebrate the appointment of ʻAbdu’l-Bahá as the Centre of Baha’u’llah’s Covenant.
November 28-29 Ascension of ‘Abdu’l-Bahá Baha’i Holy day commemorates the death of ‘Abdu’l-Bahá.
November 27 First Sunday in Advent Christian/Catholic Start of the Advent season.
November 8 Chanukah Judaism Celebrating the Miracle of lights, and the miraculous victory of Jewish independence over the Syrian-Greek invaders


Date Observance Religion Description
December 4 Presentation of the Theotokos Christian Orthodox Festival commemorating the recovery of Jerusalem and subsequent rededication of the Second Temple.
December 8 The Immaculate Conception of the Blessed Virgin Mary Christian/Catholic Day of celebration for belief in the immaculate conception of the virgin Mary.
December 18-26 Chanukah Judaism The Jewish festival of rededication, also known as the Festival of Lights
December 25 The Nativity of the Lord (Christmas) Christian/Catholic Celebration of the Birth of Jesus

Spring 2023


Date Observance Religion Description
January 1 Solemnity of Mary, The
Holy Mother of God
Christian/Catholic The feast day of the Blessed Virgin Mary under the aspect of her motherhood of Jesus Christ
January 3 Fast of 10 Teves* Judiasm Commemorating the siege laid to Jerusalem by the Babylonian King Nevuchadnetzar, leading ultimately to the destruction of the Temple and the exiling of the Jewish people from Israel
January 7 Christmas Orthodox Christian Celebration of the Birth of Jesus
January 13 Lohri Sikh Lohri marks the end of winter and is a traditional welcome of longer days and the sun’s journey to the northern hemisphere


Date Observance Religion Description
February 5-6 15 Shevat – New Year for Trees Judaism New year for trees. Commonly known as Tu Bishvat, this day marks the season in which the earliest-blooming trees in the Land of Israel emerge from their winter sleep and begin a new fruit-bearing cycle. Represents rebirth
February 15 Presentation of Jesus at the Temple Orthodox Christian The Presentation of Jesus at the Temple (or in the temple) is an early episode in the life of Jesus Christ, describing his presentation at the Temple in Jerusalem
February 17-18 Isra and Mi’raj Muslim The Israʾ and Miʿraj are the two parts of a Night Journey that, according to Islam, the Islamic prophet Muhammad took during a single night around the year 621
February 22 Ash Wednesday Christian/Catholic Marks the beginning of Lent
February 22- April 3 Lent* Christian/Catholic Lent is a season of reflection and preparation before the celebrations of Easter. By observing the 40 days of Lent, Christians replicate Jesus Christ’s sacrifice and withdrawal into the desert for 40 days
February 22 Lent* Orthodox Christian A 40-day season of fasting, reflection, and preparation before Easter. To replicate the sacrifice and withdrawal of Jesus into the desert.
February 18 Maha Shivaratri Hindu Celebrated annually in honor of Lord Shiva. This solemn festival marks a remembrance of overcoming darkness and ignorance
February 26 First Sunday of Lent Christian/Catholic Start of lent, a 40-day time period that represents repentance, fasting, and reflection
February 27 Beginning of Great
Orthodox Christian Start of lent, a 40-day time period that represents repentance, fasting, and reflection


Date Observance Religion Description
March 6 Fast of Esther (fast begins at dawn)* Judaism The fast commemorates two events in the Book of Esther: Esther and the Jewish community of Shushan having fasted for 3 days and 3 nights before she approached the king (Esther 4:16), and a fast which was observed on the 13th of Adar, when the Jews fought a battle against their enemies
March 6-7 Purim* Judaism Commemorates the (Divinely orchestrated) salvation of the Jewish people in the ancient Persian empire from Haman’s plot “to destroy, kill and annihilate all the Jews
March 7-8 Shushan Purim Judaism In cities that were protected by a surrounding wall at the time of Joshua, Purim was celebrated on the 15th of the month of Adar on what is known as Shushan Purim, since fighting in the walled city of Shushan continued through the 14th day of Adar
March 17 Shushan Purim Christian/Catholic Saint Patrick’s Day, or the Feast of Saint Patrick, is a cultural and religious celebration held on 17 March, the traditional death date of Saint Patrick, the foremost patron Saint of Ireland
March 8 Holi Hindu Represents the arrival of spring and the triumph of good over evil
March 19 Saint Joseph,
Spouse of the Virgin
Christian/Catholic Feast day for St. Joesph
March 25 The Annunciation of
the Lord
Christian/Catholic Feast day celebrating angel Gabriel’s visit to Mary and Mary’sconsent to give birth to Jesus.
March 22 Ramadan Begins* Muslim a holy month of fasting, introspection and prayer for Muslims, the followers of Islam. It is celebrated as the month during which Muhammad received the initial revelations of the Quran, the holy book for Muslims.


Date Observance Religion Description
April 5-7 Pesach/Passover (first days) ** Judaism Celebrates freedom and liberation from Egyptian slavery
April 8-11 Pesach/Passover (intermediate days) Judaism Celebrates freedom and liberation from Egyptian slavery
April 6 Holy Thursday Christian/Catholic Commemorates the Washing of the Feet and Last Supper of Jesus Christ with the Apostles
April 7 Good Friday Christian/Catholic Commemorating the crucifixion of Jesus and his death at Calvary
April 7 Annunciation Orthodox Christian Celebration of the announcement by the angel Gabriel to Mary that she would conceive and bear a son through a virgin birth and become the mother of Jesus Christ
April 11 (sunset)-13 Pesach/Passover (Last days)** Judaism Celebrates freedom and liberation from Egyptian slavery
April 9 Easter Sunday of the Resurrection of the Lord Christian/Catholic Commemorating the resurrection of Jesus
April 9 Palm Sunday Orthodox Christian The remembrance of the Entrance of Jesus into Jerusalem
April 14 Vaisakhi Sikh commemorates the formation of Khalsa panth of warriors under Guru Gobind Singh in 1699
April 14 Good Friday Orthodox Christian A day of remembrance of Jesus’s death on the cross.
April 16 Easter (Pasha) Orthodox Christian On the Great and Holy Feast of Pascha, Orthodox Christians celebrate the life-giving Resurrection of our Lord and Savior Jesus Christ
April 21-22 Eid ul-Fitr (End of Ramadan) Muslim


Date Observance Religion Description
May 8-9 Lag BaOmer Judaism Celebrates the life of Rabbi Shimon Bar Yochai, and the end of a plague that wiped out 24,000 students of Rabbi Akiva
May 4-5 Pesach Sheni Judaism Second Passover. Customary to eat Matzah today. Marks the day when someone who was unable to participate in the Passover offering at the proper time would observe the mitzvah exactly one month later.
May 18 The Ascension of the Lord Christian/Catholic Celebration of the assent of Jesus into Heaven
May 25-27 Shavuot** Jewish Celebrates the giving of the Torah at Mount Sinai
May 28 Pentecost Christian/Catholic Commemorates the descent of the Holy Spirit onto the disciples.

Summer 2023


Date Observance Religion Description
June 4 Trinity Sunday Christian/Catholic A feast in honor of the holy Trinity following the Sunday after Pentecost.
June 8 Corpus Christi Sunday Christian/Catholic Is the celebration of the Real Presence of the Body and Blood, Soul, and Divinity of Jesus Christ in the elements of the Eucharist
June 16 Solemnity of the Most
Sacred Heart of Jesus
Christian/Catholic A movable feast, it is celebrated each year on a Friday in the spring on the nineteenth day after Pentecost
June 17 The Immaculate Heart of
Christian/Catholic The Memorial of the Immaculate Heart of the Blessed Virgin Mary. This Marian devotion focuses on the Blessed Mother’s interior life, celebrating her joys and sorrows, her virtues, and her love for
June 20 Puri Rath Yatra Hindu Celebrated by devotees of the Hindu God, Lord Krishna, the Rath Yatra is the festival of chariots.
June 24 Solemnity of the Nativity of John the Baptist Christian/Catholic The Nativity of John the Baptist is a high-ranking liturgical feast, kept in the Roman Catholic, Anglican, Eastern Orthodox and Lutheran churches.
June 29 Solemnity of Sts. Peter and Paul Christian/Catholic The Feast of Saints Peter and Paul or Solemnity of Saints Peter and Paul is a liturgical feast in honor of the martyrdom in Rome of these apostles


Date Observance Religion Description
July 3 Guru Purnima Hindu Guru Purnima is a day to pay ode to the selfless contributions of a Guru
July 6 Fast of 17 Tammuz* (begins at dawn) Judaism Commemorates the breaching of Jerusalem’s walls by the Babylonian King Nevuchadnetzar, leading ultimately to the destruction of the Temple and the exiling of the Jewish people from Israel
July 9 Martyrdom of the Báb Bahá’í This holiday commemorates the 1850 execution of the co-founder of the Baha’i faith
July 28-29 Eid al-Adha Muslim The Muslim festival marking the culmination of the annual pilgrimage to Mecca and commemorating the sacrifice of Abraham.
July 18-19 Mulsim New Year Muslim The Islamic New Year, also called the Hijri New Year or Arabic New Year, is the day that marks the beginning of a new lunar Hijri year, and is the day on which the year count is incremented.
July 26-27 Tish’a B’Av Judaism Marks the destruction of the first and second Temples in Jerusalem, as well as many other terrible things which happened on that calendar date
July 27-28 Ashura Muslim Also known as Yawm Ashura, Ashura is the tenth day of Muharram, the first month in the Islamic calendar. It marks the day that Husayn ibn Ali, the grandson of the Islamic prophet Muhammad, was martyred in the Battle of Karbala.


Date Observance Religion Description
August 19 Transfiguration of Jesus Orthodox Christian Celebrating the event where Jesus is transfigured and becomes radiant in glory upon a mountain
August 21 Nag Panchami Hindu Nag Panchami is a day devoted to the Nag Devta or the snake god in the Hindu tradition. Every year, this day is celebrated during the auspicious month of Sawan, according to the Hindu calendar
August 25 Varalakshmi Vrat Hindu Worshipping the goddess of wealth and prosperity, Lakshmi, many devotees come together to celebrate Varalakshmi Vratam every year.
August 30 Raksha Bandhan Hindu Raksha Bandhan or Rakhi is an important Hindu festival, dedicated to brothers and sisters. On this auspicious day, sisters tie a thread on her brother’s wrist and pray for his long and prosperous life. In return, the brother gives a token of love to his loving sister.
August 6 The Transfiguration of the Lord Christian/Catholic The Feast of the Transfiguration is celebrated by various Christian communities in honor of the transfiguration of Jesus.
August 15 Solemnity of the
Christian/Catholic The Assumption of the Blessed Virgin Mary into Heaven is the bodily taking up of the Virgin Mary into Heaven at the end of her earthly life.
August 22 The Queenship of the Blessed Virgin Mary Christian/Catholic Time to remember the Blessed Virgin Mary as Queen of Heaven and the Mother of God.
August 20-31 Onam Hindu The 10-day-long festival marks the beginning of harvest season as well as the appearance of the Vaman avatar of Lord Vishnu along with the homecoming of King Mahabali.
August 28 Dormition of the Theotokos Orthodox Christian It celebrates the “falling asleep” (death) of Mary the Theotokos (“Mother of God”, literally translated as God-bearer), and her being taken up into heaven (bodily assumption.
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  • Catholic Mass Tue: 6:00 pm Sun: 7:00 pm
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