said by andyross:
It could also be a typo. Here in Chicago, WTTW (local PBS) has two HD shows with a 7/19/2020 expiration!!
Some shows that are streamed from the PBS website have extremely long expiration dates. I've seen some Antiques Roadshow episodes with unbelievably long times.
All streaming/On Demand services have expiration dates on their programming. Of course, like you said some do get extensions and other times some are off for a few days or weeks and are back on with another expiration date.