The Hallmark Channel will be airing a daylong M*A*S*H marathon on Monday, May 31st, as part of its Memorial Day celebration. The marathon begins at 8AM Monday morning and ends at 2:30AM in the morning on Tuesday, June 1st. Thirty uncut episodes from Season Ten and Season Eleven will be airing, including Goodbye, Farewell, and Amen at 9PM in the evening.
The official schedule for the day can be found here but a better schedule is available at Yahoo! , with the exact start times for each episode. Each uncut episode runs roughly 34 minutes and thus the episodes are not airing every half-hour. Additionally, the final episode will run for three hours due to commercials.