The main place most everyone goes to find the pulse of tango in NYC is Richard Lipkin's Non-Biased Guide To Argentine Tango In New York City.
You should be able to find a tango event every night. Other places to look are in Facebook groups, by search term: tango, tango and nyc, tango and new york, stranded at an airport tango, DanceAir, or DanceRail. But there are so many to wade through and all that information can be overwhelming. Especially if your time to enjoy partner dancing here is limited.
Data-surfing's my thing-- the look of sheer terror at the thought of being separated from my laptop once made Juan Pablo laugh...
Allow me to sift through all that data and give you the daily/weekly digest so you can focus on what you came to New York for-- dancing!