The question "Where is midnight EST in America?" contains a category error. Midnight isn't a place — it's a moment. Eastern Standard Time (EST) is a time zone, not a location.
EST (UTC-5) is a standard time offset used in eastern North America during winter (roughly November–March). EDT (UTC-4) applies during daylight saving (March–November). The zone spans:
"Midnight EST" occurs simultaneously across this entire zone — when clocks read 12:00 AM. It's a temporal coordinate, not a spatial one. The corresponding UTC time is 05:00 (EST) or 04:00 (EDT).
Time zones are human constructs mapped onto longitude — midnight is just the clock striking twelve.