CREATE TABLE table_39643 ("Date" TEXT, "2nd Bundesliga 16th" TEXT, "3rd Liga 3rd" TEXT, "Game 1" TEXT, "Game 2" TEXT)

What date has Liga 3rd of Dynamo Dresden?
SELECT "Date" FROM table_39643 WHERE "3rd Liga 3rd" = 'dynamo dresden'
SELECT "Date" FROM "table_39643" WHERE "3rd Liga 3rd" = 'dynamo dresden'