Free Previews & TV Updates Free Previews By Kelli February 1, 2019 February 1, 2019 Documentary Channel #288 is on Free Preview from January 31st to March 5th. Coming off free preview today, are ABC Spark and History Channel help.hay.net Previews at Hay Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *CommentName* Email* Website Save my name, email, and site URL in my browser for next time I post a comment.