Here's why:

* 12-hour time uses AM and PM to distinguish between morning and afternoon/evening hours.

* 0010 is a 24-hour time format (also known as military time).

* To convert from 24-hour to 12-hour time:

* If the hour is 00-12, it's AM.

* If the hour is 13-23, subtract 12 and use PM.

Since 0010 falls within the 00-12 range, it's 10:00 AM in 12-hour time.