CREATE TABLE table_name_5 (date VARCHAR2, margin_of_victory VARCHAR2, tournament VARCHAR2)

What day was the margin of victory 1 stroke when the tournament was colonial national invitation?
SELECT date FROM table_name_5 WHERE margin_of_victory = "1 stroke" AND tournament = "colonial national invitation"
SELECT "date" FROM "table_name_5" WHERE "1 stroke" = "margin_of_victory" AND "colonial national invitation" = "tournament"