Among other problems: the variables est and estTime are both mis-named. The correct name for "the time in New York" is Eastern Time.

Depending on the time of year, Eastern Time will either match "Eastern Standard Time" or "Eastern Daylight Time". Forcing the time to always be "Eastern Standard Time" means that the times will be offset by an hour from the user's expectation about half of the year.

Arizona Exception: if you're in the boundaries of Arizona, you might need to correctly specify whether you mean a "Standard" time or a time which switches based on Daylight Savings. Different places in the boundaries of Arizona work differently.