One of the common "excuses" for earth's timeline in religion is the notion of time. What is time, and is it measured the same from all beings and perspectives?

One of the common "excuses" for earth's timeline in religion is the notion of time. What is time, and is it measured the same from all beings and perspectives? We understand time in relation to Earth. If a being is not from Earth, or has some other non-human perspective, the notion of time can get very tricky to reconcile.