From the website Catholic Online:
March 20
•Bl. John of Parma
•St. Cuthbert
•St. Alexandra and Companions
•St. Anastasius XVI
•St. Archippus
•St. Benignus
•St. Urbitius
•St. Wulfram
•St. William of Penacorada
•St. Tetricus
•St. Herbert
•St. John, Sergius, & Companions
•St. Martin of Braga
•St. Nicetas
•St. Paul and Companions
•St. Photina
It is the Feast Day of a particular saint whose name you share. E.g. St. Joseph's Feast Day is March 19th. If you're named Joseph then I hope you had a happy Onomastic or "Name Day" this past March.
Saint Sebastian's feast day is celebrated on the 20th January each year.Saint Sebastian's feast day is celebrated on the 20th January each year.
St. Patrick whose feast day is March 17 - St. Patrick's Day.
The 20th Of Octover
The feast day of Perpetua is March 7.
Her feast day is on March 3.
Dec 7th is the Feast Day of St. Nicholas.
March 20th 1999 was a Saturday.
March 7 is the feast day of St. Perpetua.
March 3 is Katharine's feast day.
March 17 is the feast day of Saint Patrick.
March 20 is the feast day of Saint Alexandra of Amisus.