NLM is told that this particular celebration of the older form of the Ambrosian rite is being offered once a month -- the next being on June 10th at 4:00pm. (To the locals in this region, please do go out and show your support for this, a part of our shared liturgical patrimony.)
Readers will no doubt recognize NLM's own Ambrosian expert, Nicola de Grandi, in the photos.