I'm from Germany and the concept of time zones is very foreign to me since we only have one time zone across the country.

As America has multiple time zones I was wondering which time zone is most commonly used to describe a time nationwide. For example if there is a TV show airing at a specific time or someone wants to describe an event happening in a different State.

I often hear people mentioning the Eastern Time (ET) and Pacific Time (PT). Eastern Time understandably applies to the east Coast including New York City. And as far as I understand Pacific Time actually is the Western time including Los Angeles, which also makes me wonder why it's not called "Western Time (WT)".

So I wonder which time is the one people most commonly use across the States.

And how do people keep track of that time zone if they're not living there? Do most people have multiple clocks on their phone or do they Google the time each time or do they calculate when that time is relative to their time in their head?