It depends on your cable or satellite provider. SFC introduced a West Coast Feed awhile back, but apparently not everyone is using it. Babylon 5 airs at 7 p.m. ET/PT for those using the appropriate feeds. If you're getting the East Coast Feed than it will be on at 4 p.m. (The Crusade reruns were on a 8 p.m. ET, during prime time.)
BTW, a Sci-Fi Channel 2001 program grid printed in Advertising Age shows Crusade at 10 a.m. (ET/PT) on Sundays, but no indication of when it will start.