Synchrony is a DEMOPARTY that begins in NEW YORK CITY, continues on an Amtrak train, and concludes in MONTREAL.
Because this party is in 3 locations, the location is "incorrect." It is possible to attend in Montreal and not NYC, and some in the past have done that. Or just the train and Montreal.
The party is awesome and you should go.
Links
Location
Babycastles Gallery
137 West 14th St
New York, NY
United States 
Party Series
SynchroNY 2019 is a part of Synchrony.