If you don't want to get DNF you have to start at or after 24 hours after you played your first game yesterday. So if yesterday( Sunday ) you started at 12 PM today ( Monday ) you can't start before 12 PM or you'll get DNF sometime for like 7-8-9 hours. You can only start at 12 or after, and if you start after 12pm then Tuesday you should start after what you started Monday.