I weigh in on a Tuesday as there are 5 classes on a Tues so when I'm on shift there's always one I can go to otherwise I miss one week and struggle to get motivated to go back!
Welcome! I am quite new here too, and I weigh on a Monday. Have you spotted the sub-forums? There is a sub-forum for weekly weigh-ins, and there'll be a thread in there for people who weigh in on Tuesday like you. Link here: Slimming World - Weekly Weigh In