In a little over 2 weeks, on March 12, most of the US and Canada will change from Standard Time to Daylight Saving Time.
NOTE: In 2015, the state of Quintana changed times zones to the Eastern Time zone, and no longer recognizes Daylight Saving Time. So when the US/Canada make their 1hr switch to DST, Cancun and Riviera Maya will remain the same on EST.
https://www.riviera-maya-news.com/no-daylight-savings-time-observed-for-cancun-riviera-maya/2016.html