New York and Cancun are usually on the same time. Cancun uses Eastern Standard Time (EST, UTC-5) year-round, while New York uses Eastern Time (EST/EDT, UTC-5/-4). During standard time, both are the same; during daylight saving time, New York is 1 hour ahead.
Cancun does not observe daylight saving time, so the difference varies seasonally.
Any time generally works! Since both cities are usually on the same time or just 1 hour apart, you can call during normal business hours with minimal adjustment.
Cancun is one of the most popular vacation destinations for New Yorkers. Direct flights take about 4 hours, and it's a favorite for beach getaways, especially during winter months.