I would need a forest of trees to keep a time log on all the quilts I have on the go at the moment but I do keep a record of time spend on large cross stitch projects. The cross stitich I am working on at the moment I started on the 1st January, 2000 worked on it for about 10 hours during that month then didn't touch it again until February 2012. The cross stitch has taken me 602 hours, the back stitch so far has taken me 8 3/4 hours.