Do you get PBS MPT (Maryland Public Television)?
If so, there should be a few opportunities to watch it.
Celtic Woman: Postcards from Ireland
Saturday, November 27, 12:30 pm on MPT
Saturday, November 27, 07:00 pm on MPT2
Sunday, November 28, 07:00 pm on MPT
Thursday, December 2, 08:00 pm on MPT2
Tuesday, December 7, 08:00 pm on MPT
https://www.mpt.org/schedule/Hope this helps.
I'm still waiting for Detroit to list it. They're usually a little late to the party.