CREATE TABLE table_21953 ("Country / Region" TEXT, "Name" TEXT, "Host ( s ) " TEXT, "Channel" TEXT, "Premiere / Aired" TEXT, "Seasons" TEXT)

When did the program air on Vier?
SELECT "Premiere / Aired" FROM table_21953 WHERE "Channel" = 'VIER'
SELECT "Premiere / Aired" FROM "table_21953" WHERE "Channel" = 'VIER'