Update: 03/07/2026
Two large ranking/check-in tables for 5K+ PL users and 10K+ worldwide users, including their last 183 days checkin history. The data covers everything up to the afternoon of July 2, so in practice it’s a little over half a year.
Yes, unfortunately, some checkins do get missed occasionally (especially in the 10K+ table), but generally only when someone logs more than ~300 checkins within about 12 hours.