There is always something interesting happening in New York City. Always. Concerts in New York, Broadway shows and plays, the famous Metropolitan Opera, sports events, exhibitions in museums and galleries. There are events in New York for any taste: parades, fashion shows, flower shows, auto shows, parades (from the Chinese New Year parade to the Greek Independence Day parade), film festivals, assemblies, new movies filming, and so on. Check the calendar of events by month to see the best time to visit New York: the theater and opera schedule, concerts, basketball, hockey, tennis and so much more.
New York City is also home to many trade shows, conferences and other professional events. You can see the schedules for some of these on the Jacob Javits Center website.