8am at the shelter you wanna volunteer at? For us, we can go any time of day we want, reasonably. Ya know, not like 3 am or sumtin lol. We just need to show up on our regular day or give notice. I mean, we are working for free, so we're dedicated and all, but if we can't make it to work one week or something, they aren't gonna get mad or even FIRE us. They can't afford to fire free employees xD