Hey, maybe I can help? I'm new to Roll20 but I've been playing rpgs for about a decade and specifically DMing 5e for my irl group for about a year. I usually run published adventures with my own edits and additions but we can try something more improvisational too. Do you and your group have any previous rpg experience? What sort of game are you interested in? Also, I should note I'm not on GMT (three hours behind in eastern canada) but I have afternoons off and will be available at the hours you posted.