Season 0 of Hey Arnold! premiered on Jun 16, 1994
Season 1 of Hey Arnold! premiered on Oct 07, 1996
Season 2 of Hey Arnold! premiered on Sep 22, 1997
Season 3 of Hey Arnold! premiered on Aug 31, 1998
Season 4 of Hey Arnold! premiered on Mar 10, 1999
Season 5 of Hey Arnold! premiered on Mar 04, 2001