What is central time for 10am eastern time?

Also known as: Eastern Standard Time (EST) and Eastern Daylight Time (EDT)

The term Eastern Time (ET) is often used to denote the local time in areas observing either Eastern Daylight Time (EDT) or Eastern Standard Time (EST).

In other words, in locations observing Daylight Saving Time (DST) during part of the year, Eastern Time is not static but switches between EDT and EST.