How do i set the time manually on an old verizon lg chocolate?

i have a verizon lg chocolate phone, cant see how to set the time manually, surely this must be doable – what if i want the time to be a bit fast on it and not set to the right time or something? its not signed up to a network or anything, its just a blank phone with no capabilities to make calls, does that make a difference? i know nothing about american phones.