I see a lot of comments quoting 6 hour days etc. I work for very large (fortune 100) clients onsite and even though I bill daily, I don't really have a lot of c

I see a lot of comments quoting 6 hour days etc. I work for very large (fortune 100) clients onsite and even though I bill daily, I don't really have a lot of control over number of hours especially less than 8. Sure, there are days when I can leave early or there are days when I work 10-11 hours, but it really depends on your clients at the end of the day. In general, for me, it has been 9-10 hours for a day of work if I bill daily. Of course, I ensure that my price accommodates that (I usually multiply my hourly rate by 10). So YMMV.