Google users in United States can see a nice St. Patrick's Day doodle, while the Irish Google homepage boasts another doodle. Both these doodle are coloured in green as it's tradition to wear green dress on St. Patrick's Day.
On clicking the both doodles, Google will lead us to the search page related to St. Patrick's Day. Saint Patrick was a Romano-Briton and Christian missionary, who is the most generally recognized patron saint of Ireland.
St. Patrick's Day is celebrated both in and outside of Ireland, as both a liturgical and non-liturgical holiday. In the dioceses of Ireland it is both a solemnity and a holy day of obligation and outside of Ireland, it can be a celebration of Ireland itself.
Saint Patrick's Day was made an official feast day in the early 17th century, and has gradually become a celebration of Irish culture in general. Saint Patrick's Day is a public holiday in the Republic of Ireland, Northern Ireland, Newfoundland and Labrador and in Montserrat.