The fifth season premiere of Hell On Wheels is on AMC at 9:00. Western, set in 1865, about the people who built the first transcontinental railroad including a former Confederate soldier seeking revenge on the Union troops who killed his wife.
[starzwesterns]Starz Westerns has High Noon, the 1952 Western starring Gary Cooper as the marshal in a small Western town who must, by himself, face a gang of criminals seeking revenge when none of the townspeople will help him, at 8:00.
HDNet Movies has the 1973 western, High Plains Drifter, directed by and starring Clint Eastwood, the film tells the story of a no-name drifter who helps a town fend off a group of criminals, at 6:30 PT/9:30 ET.
Reelz has the entire 1989 Western mini-series, Lonesome Dove, based on Larry McMurtry’s Pulitzer Prize-winning novel of the same name, starring Robert Duvall and Tommy Lee Jones. The first episode airs at 1:00 PT/4:00 ET with the remaining episodes airing immediately thereafter.