This festivity is on the 17th of March, and Irish people celebrate it a lot.
Listen to this song and count with a leprechaun up to 100:
LOOK AT THESE WEB SITES TO KNOW MORE ABOUT SAINT PATRICK’S DAY SYMBOLS
http://english-zone.com/holidays/st-patsymbols.html
http://www.celebratingholidays.com/?page_id=2707