CREATE TABLE table_54620 ("Date" TEXT, "Visitor" TEXT, "Score" TEXT, "Home" TEXT, "Decision" TEXT, "Attendance" FLOAT, "Record" TEXT)

What was the date of the game where Ottawa was the home team and Atlanta is the visiting team?
SELECT "Date" FROM table_54620 WHERE "Visitor" = 'atlanta' AND "Home" = 'ottawa'
SELECT "Date" FROM "table_54620" WHERE "Home" = 'ottawa' AND "Visitor" = 'atlanta'