The feast day of Saint David is the 1st of March
St. David's feast day is March 1st as per the Patron Saint Index.
Most feast days are celebrated with a Mass in honor of that saint. If you want to know about local customs, you need to be more specific, as in, "How is St. David's feast day celebrated in Wales?"
19 March - Feast of St. Joseph1 May - Feast of St. Joseph the Worker
St. David or Dewl Sant, is the patron Saint of the Welsh. His feast day is March 1st. You can Celebrate Saint David's Day by wearing a pendant that shows Y Ddraig Goch, The Red Dragon of Wales.
The feast of St. Lucy is December 13.
August 11 is the feast of St. Clare of Assisi.
January 3 is the feast of St. Genevieve.
May 14 is the feast of St. Matthias.
Feast of St. Anthony was created in 1919.
The feast day of St Lydia is on August 3.
The feast of St. Cecilia is on November 22.
July 29 is the feast of St. Martha.