Not too surprised, Delta has permanently closed Skyclub in
#1 Satellite at Tokyo/Narita, effective May 16, 2017.
It was one of the best reviewed Skyclubs until domestic lounge updates....
Effective May 16, 2017, Delta Sky Club at Satellite 1 in Narita Airport (NRT) will permanently close its doors. We would like to invite you to enjoy our refreshed Club located at Satellite 2.
I don't believe there was any notice when I visited the lounge in April...
Jiburi
P.S.-Looks like there are only two remaining skyclub operating outside of US, Tokyo-Narita and Santiago Chile.