March 19 is the 78th day of the year (79th in leap years). 287 days remain until the end of the year.
Observances
Saint Joseph (Western Christianity; if this date falls on Sunday, the feast is moved to Monday March 20)
Saint Joseph's Day (Roman Catholicism and Anglican Communion) related observances:
Falles, celebrated on the week leading to March 19 (Valencia)
Father's Day (Spain, Portugal, Italy, Honduras, and Bolivia)
"Return of the Swallow", annual observance of the swallows' return to Mission San Juan Capistrano in California
Earliest day on which Maundy Thursday can fall, while April 22 is the latest; celebrated on Thursday before Easter (Christianity)
Minna Canth's Birthday and the Day of Equality (Finland)
Kashubian Unity Day (Poland)