Oops, I didn't realize until reading
this article that the Buton Marathon on October 23rd includes DS:
Monday, October 23
4:10pm/3:10c Dark Shadows
And after checking out Freeform's own site I discovered it's also on:
Friday, October 27
7am/6c Dark Shadows
Monday, October 30
11:30am/10:30c Dark Shadows
Apparently the chart first released by Freeform was only for the primetime showings...