Here's the latest post: https://peakd.com/hive-167922/@eddie-earner/saturday-savers-club-with-sally-saver-or-year-3-or-week-45-saturday-11-november-2023-or-win-eds-for-comments
Basically everyone sets their savings goals and makes update posts about it. There are various contests for posting and comments. You can start any time but a lot of people set their goals at the beginning of the year. :)