NYC offers free events in April, including the indieplaza festival, an Olympic-size pool opening in Harlem, Easter Fest, environmental art at the High Line Nine, stargazing, a street photographers exhibition, and an Earth Day concert.

The article highlights the 264th St. Patrick's Day parade in NYC, including parade details, traffic disruptions, viewing options, bar crawls, family-friendly events, and historic tours.

New York City provides alcohol-free New Year's Eve events, including a sober bar, eco-friendly bike rides, mocktails, and family-friendly activities. Fireworks are replaced with a light show amid fire risks.