CREATE TABLE table_4204 ("Country / region" TEXT, "Channel" TEXT, "Series premiere" TEXT, "Title in country" TEXT, "Source ( s ) " TEXT, "Airing?" TEXT)

What is the premiere date of the american disney xd tron uprising site?
SELECT "Series premiere" FROM table_4204 WHERE "Source(s)" = 'American Disney XD Tron Uprising Site'
SELECT "Series premiere" FROM "table_4204" WHERE "Source(s)" = 'American Disney XD Tron Uprising Site'