A listing of the current semester's religious observances. Please note that most Muslim and Jewish holy days begin at sundown before the actual day.

* indicates religious observance that may interfere with academic work. Please be mindful when assigning work on these days. 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.

Fall Semester 2022

Date Observance Religion Description


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


October 4-5th Yom Kippur* Judaism Also know as the Day of Atonement, it is the holist day of the year in Judaism.
October 9th Sukkot (first days) Judaism Feast of Tabernacles
October 5-9 Sukkot (intermediate
Judaism Feast of Tabernacles
October 16-18th Shemini Atzeret Judaism Eighth Day of Assembly
October 17th-18th Simchat Torah Judaism Day of Celebrating the Torah
October 25th-26th Birth of the Báb Baha’i Celebration of the Birth of Bab (founder of Bábism)
October 20th Birth of the Guru Granth Sikh Celebration of the Birth of Guru Granth
October 5th Dusshera Hindu Festival that celebrates the victory of good over evil
October 5th Navaratri Ends Hindu .
Oct. 29- Oct. 30 Mawlid al-Nabi Muslim Celebration of birthday of the Prohet Muhammad
October 23rd Dhan Teras Hindu Marks the first day of Diwali.
October 24th Diwali Hindu Festival of lights celebrating victory of light over darkens, good over evil, and knowledge over ignorance.
October 24th Bandi Chhor Divas Sikh Sikh holiday which coincides with the day of Diwali.
October 9th Sharad Purnima Hindu Harvest festival marking the end of the monsoon


November 1st All Saint’s Day Christian/Catholic Christian festival celebrated in honor of all the saints
November 2nd All Soul’s Day  Christian/Catholic A day of remembrance for all of the deceased
November 20th Our Lord Jesus Christ, King of the Universe Christian/Catholic Feast day in honor of Jesus Christ as Lord over all creation.
November 26th 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 28th-29th Ascension of ‘Abdu’l-Bahá Baha’i Holy day that commemorates the death of ‘Abdu’l-Bahá.
November 27th First Sunday in Advent Christian/Catholic Start of the Advent season.
November 8th Chanukah Judaism The Jewish festival of rededication, also known as the Festival of Lights.


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

Spring Semester 2023

Date Observance Religion Description


January 1st Solemnity of Mary, The
Holy Mother of God
Christian/Catholic feast day of the Blessed Virgin Mary under the aspect of her motherhood of Jesus Christ
January 7th Christmas Orthodox Christian Celebration of the Birth of Jesus
January 13th 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


February 5-6th 15 Shevat – New
Year for Trees
Judaism the day that marks the beginning
of a “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.
February 15th 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
February 17th-18th 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 22nd Ash Wednesday Christian/Catholic Marks the begining of Lent
February 22nd- April
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 22nd Lent* Orthodox Christian A 40 day season of fasting, reflection, and prepareation
before Easter. To replicate the sacrifice and withdrawal of Jesus into the desert.
February 18th Maha Shivaratri Hindu Celebrated annually in honor of Lord Shiva. This solemen festival marks a remembrance of overcoming darkenss and ignorance
February 26th First Sunday of Lent Christian/Catholic Start of lent, a 40 day time period that that represents rependance, fasting and reflection
February 27th Begining of Great
Orthodox Christian Start of lent, a 40 day time period that represents repentance, fasting and reflection
March 6th Fast of Esther (fast
begins at dawn)
Judaism The fast commemorates one of
two events in the Book of Esther:
either Esther and the Jewish
community of Shushan having
fasted for 3 days and 3 nights
before she approached the king
(Esther 4:16), or a fast which is
presumed to have occurred on
the 13th of Adar, when the Jews
fought a battle against their
March 6-7th Shushan 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 7-8th 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 17th 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 8th Holi Hindu Represents the arrival of spring and triumph of good over evil.
March 19th Saint Joseph,
Spouse of the Virgin
Christian/Catholic Feast day for St. Joesph
March 25th The Annunciation of
the Lord
Christian/Catholic Feast day celebrating angel Gabriel visit to Mary and Mary’s
consent to give birth to Jesus.
March 22nd 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


April 5-13th Pesach/Passover
(First days) *
Judaism Passover, the Feast of Unleavened
April 5-13th Pesach/Passover
(Intermediate days)
April 6th Holy Thursday Christian/Catholic Commemorates the Washing of the Feet and Last Supper of
Jesus Christ with the Apostles
April 7th Good Friday Christian/Catholic Commemorating the crucifixion of Jesus and his death at Calvary
April 7th 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 13th *Pesach/Passover (Last days) Judaism Harvest festival marking the end of the monsoon season.
April 9th Easter Sunday of the Resurrection of the Lord Christian/Catholic Commemorating the
resurrection of Jesus
April 9th Palm Sunday Orthodox Christian The remembrance of the Entrance of Jesus into Jerusalem
April 14th Vaisakhi Sikh commemorates the formation of Khalsa panth of warriors under Guru Gobind Singh in 1699
April 14th Good Friday Orthodox Christian A day of remembrance of Jesus’s death
on the cross.
April 16th 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 21-22nd Eid ul-Fitr (End of Ramadan) Muslim


May 8-9th Lag BaOmer Judaism Occurs on the 33rd day of the Omer,
the 49-day period between Passover
and Shavuot.
May 4-5th Pesach Sheni Judaism marks the day when someone
who was unable to participate in
the Passover offering in the
proper time would observe the
mitzvah exactly one month later.
May 18th The Ascension of the Lord Christian/Catholic Celebration of the assent of Jesus into Heaven
May 25th-26th Shavuot Jewish Festival of Weeks,
commemorates the giving of the
Torah at Mount Sinai
May 28th Pentecost Christian/Catholic Commemorates the descent of the Holy Spirit onto the disciples.

Summer Semester 2023

Date Observance Religion Description


June 4th Trinity Sunday Christian/Catholic A feast in honor of the holy Trinity following the Sunday after Pentecost.
June 8th 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 16th 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 17th 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 20th Puri Rath Yatra Hindu Celebrated by devotees of the Hindu God, Lord Krishna, the Rath Yatra is the festival of chariots.
June 24th 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 29th 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 honour of the martyrdom in Rome of the apostles Saint Peter and Saint Paul.


July 3rd Guru Purnima Hindu Guru Purnima is a day to pay ode to the
selfless contributions of a Guru
July 9th Martyrdom of the Báb Bahá’í This holiday commemorates the 1850
execution of the co-founder of the Baha’i
July 28th-29th Eid al-Adha Muslim The Muslim festival marking the culmination of the annual pilgrimage to Mecca and commemorating the sacrifice of Abraham.
July 18th-19th 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 26-27th Tish’a B’Av Jewish The Fast of the Ninth of the Jewish month of Av, Tisha b’Av, marks the end of a three week period of mourning during which our people remember the series of events that led to the Babylonian conquest of Jerusalem and the destruction of our people’s first Temple.
July 27-28th 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.


August 19th The Transfiguration of the Lord Orthodox Christian Celebrating the event where Jesus is
transfigured and becomes radiant in glory
upon a mountain
August 21st 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 25th Varalakshmi Vrat Hindu The worshipping the goddess of wealth and prosperity, Lakshmi, many devotees come together to celebrate Varalakshmi Vratam every year.
August 30th 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 6th The Transfiguration of the
Christian/Catholic The Feast of the Transfiguration is celebrated by various Christian communities in honor of the transfiguration of Jesus.
August 15th 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 22nd The Queenship of the Blessed Virgin Mary Christian/Catholic Is the time to remeber the Blessed Virgin Mary as Queen of Heaven and the Mother of God.
August 20th-31st 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 28th 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.
*Indicates religious observance that may interfere with academic work. Please be mindful when assigning work on these days.
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