My spurt of sales seem to come on weekends (for a few months now). It seams to be quite dead most of the week and if i do get sales during the week they seem to be late at night. Another theory i am now investigating is that maybe the exponential increase in mobile device usage has something to do with with this dead beat zombie traffic.
Mobile devices convert badly, it is a known fact. Maybe the reason i am seeing more sales over the weekend and late at night is because more people have the time to seat in front of their good old pcs at home on weekends?... will definitely look into this further in upcoming weeks.