Final answer:
Northeastern cities in the US are in the Eastern Standard Time zone, which is 5 hours behind Coordinated Universal Time.
Step-by-step explanation:
Cities in the Northeast region of the United States are part of the Eastern Standard Time (EST) zone. This time zone is 5 hours behind Coordinated Universal Time (UTC-5). It's important to note that the continental US has 4 main time zones: Eastern, Central, Mountain, and Western. The Eastern Time Zone includes states like New York, Massachusetts, and Pennsylvania. If it is noon in London, which is on Greenwich Mean Time (GMT), then it is 7 a.m. in cities like New York within the EST during standard time.