Ba'al travels back in time and prevents the Stargate program from being started. SG-1 must somehow restore history.
7/29/2008
12/10/2009
9/1/2023
11/26/2019
12/22/2021
9/24/2009
4/27/1990
3/20/1968
4/1/2003
6/6/1980
11/21/2009
6/28/2005
7/3/2010
12/15/1988
1/1/2010
7/1/1964
5/17/1991
3/6/1993
9/3/2021
8/15/2015
1/1/1961