CREATE TABLE table_63900 ("Year" FLOAT, "Main" TEXT, "Hessen" TEXT, "Rhein" TEXT, "Saar" TEXT)

What is the average year for a Saar of FK Pirmasens and Hessen of Wormatia Worms?
SELECT AVG("Year") FROM table_63900 WHERE "Saar" = 'fk pirmasens' AND "Hessen" = 'wormatia worms'
SELECT AVG("Year") FROM "table_63900" WHERE "Hessen" = 'wormatia worms' AND "Saar" = 'fk pirmasens'