Fr., now Bp. Zendejas, has mass not in NYC, but about 70 miles from there in Connecticut. If you don't drive, or have someone to drive you, there's no public transportation to reasonably reach his location.
As to exact times, places, he doesn't use Internet at all. It seems information is by word of mouth amongst those in the know. I believe this may be because his base is very close to the Ridgefield SSPX priory where he was prior for many years.
Bp. Zendejas left the SSPX in 2014 and returned to Connecticut. When this hapoened, a large number of people left Ridgefield. I've rumors of harassment, threats, on-line bullying, vandalism, and children being expelled from the SSPX school as a result of a parent attending Fr. Zendejas' Mass. For this reason, the Connecticut mass center is kept secretive. I believe Fr. also says Mass at Matthew, the site owner's chapel where things are considerably more open. Unfortunately, Texas is a bit far for New Yorkers.