In Rome there is so much to see that a website is not enough to describe all the possibilities my town offers the visitors, please have a look of my list remembering you may contact me to design your own personal tour.
Morning tours generally start around 9 am (for a 4-hour tour) or 10 am (for a 3-hour tour), and finish around 1 pm.
Afternoon tours generally start around 2 pm. There may be some flexibility in these times depending on your schedule.
Full-day tours (seven hours) generally have reasonably flexible times.