The Irish National Day is a designated date on the 17-Mar to celebrate the Saint Patrick's Day of Ireland.

Often this public holiday in Ireland is not called as National Day. In spite of this, the banks, schools in addition to other public buildings will be closed.

The 1st of January is celebrated as The New Year in Ireland to mark the beginning of a new calendar year.

May Day is another countrywide holiday in Ireland which is observed to commemorate the successes of the labour movement.

Christmas Day is a public holiday in the majority of the nations around the world and observed on December 25 to commemorate the birth of Jesus.

The Orthodox Christian and Western-Roman Catholic patronal feast day or 'name day' are celebrated in each place's patron saint's day, in accordance with the Calendar of saints.

The most important holidays for Muslims in Ireland are Eid ul-Fitr. This is celebrated straight after the end of Ramadan and Eid al-Adha which is celebrated at the conclusion of the Hajj.

Diwali (Festival of Light) is among the biggest holidays observed by Hindus, Jains and Sikhs who reside in Ireland.

Jews who live in Ireland celebrate many festivals: the Passover (Spring Feasts of Pesach) and Shavuot, the Rosh Hashanah (beginning of the Year), Yom Kippur (Day of Atonement), Sukkot (Tabernacles), and Shemini Atzeret (Eighth Day of Assembly).