CREATE TABLE table_62700 ("Date" TEXT, "Venue" TEXT, "Score" TEXT, "Result" TEXT, "Competition" TEXT)

On what date is the venue Sam Nujoma Stadium, Windhoek, Namibia?
SELECT "Date" FROM table_62700 WHERE "Venue" = 'sam nujoma stadium, windhoek, namibia'
SELECT "Date" FROM "table_62700" WHERE "Venue" = 'sam nujoma stadium, windhoek, namibia'