Maha Shivaratri is celebrated in honour of the deity Shiva. It is observed by remembering Shiva and chanting prayers, fasting, and meditating on ethics and virtues such as honesty, non-injury to others, charity, forgiveness, and the discovery of Shiva. (Wikipedia)
Ramadan, one of the five pillars of Islam is a month of fasting, prayer, reflection, and community. It commemorates Muhammad's first revelation. (Wikipedia)
Ash Wednesday is a holy day of prayer and fasting in many Western Christian denominations. It is preceded by Shrove Tuesday and marks the first day of Lent, the six weeks of penitence before Easter. (Wikipedia)
The day commemorates Saint Patrick and the arrival of Christianity in Ireland, and, by extension, celebrates the heritage and culture of the Irish in general. Celebrations generally involve public parades and festivals, and the wearing of green attire or shamrocks. (Wikipedia)
Nowruz is the Persian new year and is celebrated by many cultures particularly around western and central Asia regions. It is also recognized as a holy day by Zoroastrians, Bahá’ís, and some Muslims. (Wikidpedia)
Laylat al Qadr or Night of Power is commemorated as the night the Quran was first sent down from heaven to the world and also the night when the first verses of the Quran were revealed to the Islamic prophet Muhammad. (Wikipedia)
Mothering Sunday is a day honouring mother churches, the church where one is baptized and becomes "a child of the church". It is celebrated in the UK, Ireland, and some Commonwealth countries. (Wikipedia)
During this festival Chinese families visit the tombs of their ancestors to clean the gravesites and make ritual offerings to their ancestors. The holiday recognizes the traditional reverence of one's ancestors in Chinese culture. (Wikipedia)