The known movement interval patterns are shifted in time to best match reported observations. Offsets are given relative to 00:00 UTC.
Older observations are given less weight, and those older than 60 days are ignored.
Observations by registered members are given greater weight than those of non-members.
Shops are assumed to move every 12 hours.
Guilds are assumed to move relative to the start of each of the following days: 1st, 6th, 10th, 14th, 19th, 23rd, 27th of every month. A negative time offset will therefore cause it to take place the preceeding day.