The Republic Day of India commemorates the date on which the Constitution of India came into force replacing the Government of India Act 1935 as the governing document of India on 26 January 1950.

Diwali or Dīpāvali (Sanskrit: दीपावली,Nepali: दिपावली, Hindi: दिवाली, Marathi: दिवाळी, Kannada: ದೀಪಾವಳಿ, Konkani: धाकली दिवाळी, Tamil: தீபாவளி, Telugu: దీపావళి, Urdu: دیوالی, Oriya: ଦୀପାବଳୀ) is a significant 5-day festival in Hinduism, Sikhism, and Jainism occurring between mid October and mid November. It is also popularly known as the Festival of Lights. The word दीपावली (Dipavali) literally translates as a row of lamps in Sanskrit. It is traditional for adherents of Diwali-celebrating faiths to light small clay lamps (or Deep in Sanskrit: दीप) filled with oil to signify the triumph of good over evil within an individual. During Diwali, many wear new clothes and share sweets/snacks with each other. Some Indian business communities start their financial year by opening new account books on the first day of Diwali for good luck the following year. In Hinduism, Diwali marks the return of Lord Raama to his kingdom Ayodhya after defeating Ravana (the demon king) - the ruler of Lanka in the epic story of Ramayana. It also celebrates the slaying of the demon king Narakasura by Lord Krishna. Both signify the victory of good over evil. In Jainism, Diwali marks the attainment of moksa by Mahavira in 527 BC. In Sikhism, Diwali commemorates the return of Guru Har Gobind Ji to Amritsar after freeing 52 other Hindu kings imprisoned in Fort Gwalior by Emperor Jahangir. He was welcomed by the people who lit candles and divas to celebrate his return, which is why Sikhs also refer to Diwali also as Bandi Chhorh Divas meaning "the day of release of detainees".

Magha Puja or Sangha celebration. This day falls on the full moon of the third month. It commemorates the main event in Buddha's life, after His first retreated from the rain (Vassa). The anniversary of Buddah's birthday in the Mahayana tradition; the commemoration of Buddah's birth, enlightenment, and death, celebrated on the day of the full moon of the 6th month in the Theravada tradition.

होली (Sanskrit), Holi, or Holli,is a spring festival celebrated by Hindus, Sikhs and others. It is primarily observed in India, Nepal, Sri Lanka, and countries with large Indic diaspora populations, such as Suriname, Guyana, South Africa, Trinidad, United Kingdom, United States, Mauritius, and Fiji. In West Bengal of India it is known as Dolyatra (Doul Jatra) or Basanta-Utsav ("spring festival"). The most celebrated Holi is that of the Braj region, in locations connected to the god Krishna: Mathura, Vrindavan, Nandagaon, and Barsana. These places have become tourist destinations during the festive season of Holi, which lasts here to up to sixteen days. The main day, Holi, also known as Dhuli Vandana in Sanskrit,also Dhulheti, Dhulandi or Dhulendi, is celebrated by people throwing coloured powder and coloured water at each other. Bonfires are lit the day before, also known as Holika Dahan (burning of Holika) or Chhoti Holi (little Holi). The bonfires are lit in memory of the miraculous escape that young Prahlad accomplished when Demoness Holika, sister of Hiranyakashipu, carried him into the fire. Holika was burnt but Prahlad, a staunch devotee of god Vishnu, escaped without any injuries due to his unshakable devotion. Holika Dahan is referred to as Kama Dahanam in South India. Holi is celebrated at the end of the winter season on the last full moon day of the lunar month Phalguna (February/March), (Phalgun Purnima), which usually falls in the later part of February or March. In 2009, Holi (Dhulandi) was on March 11 and Holika Dahan was on March 10. In 2010, Holi was on March 1 and Holika Dahan was on February 28.

Good Friday, also called Holy Friday, Black Friday, or Great Friday, is a holiday observed primarily by adherents to Christianity commemorating the crucifixion of Jesus and his death at Calvary. The holiday is observed during Holy Week as part of the Paschal Triduum on the Friday preceding Easter Sunday, and often coincides with the Jewish observance of Passover. Based on the scriptural details of the Sanhedrin Trial of Jesus, the Crucifixion of Jesus was most probably on a Friday. The estimated year of Good Friday is AD 33, by two different groups, and originally as AD 34 by Isaac Newton via the differences between the Biblical and Julian calendars and the crescent of the moon. A third method, using a completely different astronomical approach based on a lunar Crucifixion darkness and eclipse model (consistent with Apostle Peter's reference to a "moon of blood" in Acts 2:20) arrives at the same date, namely Friday April 3, AD 33.

Eid ul-Fitr (Arabic: عيد الفطر ‘Īdu l-Fiṭr‎), often abbreviated to Eid, is a Muslim holiday that marks the end of Ramadan, the Islamic holy month of fasting. Eid is an Arabic word meaning "festivity", while Fiṭr means "to break fast"; and so the holiday symbolizes the breaking of the fasting period. It is celebrated after the end of the Islamic month of Ramadan, on the first day of Shawwal. Eid ul-Fitr lasts for three days of celebration and is sometimes also known as the "Smaller Eid" (Arabic: العيد الصغير al-‘īdu ṣ-ṣaghīr‎) as compared to the Eid ul-Adha that lasts four days and is called the "Greater Eid" (Arabic: العيد الكبير al-‘īdu l-kabīr‎). Muslims are commanded by the Quran to complete their fast on the last day of Ramadan and then recite the Takbir all throughout the period of Eid.

The Day of Ashura (عاشوراء (ʻĀshūrā’, Ashura, Ashoura, and other spellings) is on the 10th day of Muharram in the Islamic calendar and marks the climax of the Remembrance of Muharram. It is commemorated by Shia Muslims as a day of mourning for the martyrdom of Husayn ibn Ali, the grandson of the Islamic Prophet Muhammad at the Battle of Karbala on 10 Muharram in the year 61 AH (October 02, 680 AD). According to Sunni Muslim tradition, the Prophet Muhammad fasted on this day and asked other people to fast. Sunni Muslims also celebrate the day claiming that Moses fasted on that day to express gratitude to God for liberating the Israelites from Egypt. In some Shia countries and regions such as Afghanistan, Iran, Iraq, Pakistan, Lebanon, Bahrain, Commemoration of Husayn ibn Ali has become a national holiday and most ethnic and religious communities participate in it. Even in Sunni dominated Muslim community of India, Ashura (often called Moharram) is a public holiday.

Commemorates the day in 1947 when India achieved freedom from British rule.

Gandhi Jayanti is a National Holiday celebrated in India to mark the occasion of the birthday of Mohandas Gandhi, the "Father of the Nation." He was born on October 2, 1869. Hence Gandhi Jayanti is celebrated every year on the 2nd of October. It is one of the three official declared National Holidays of India and is observed in all Indian states and union territories. The United Nations General Assembly announced on 15 June 2007 that it adopted a resolution which declared that the 2nd of October will be celebrated as the International Day of Non-Violence.

Christmas or Christmas Day is an annual Christian holiday commemorating the birth of Jesus Christ. It is celebrated on December 25, but this date is not known to be Jesus' actual birthday, and may have initially been chosen to correspond with either the day exactly nine months after some early Christians believed Jesus had been conceived, a historical Roman festival, or the date of the northern hemisphere's winter solstice. Christmas is central to the Christmas and holiday season, and in Christianity marks the beginning of the larger season of Christmastide, which lasts twelve days