For the sake of discretion the exact time and date of an encounter should
never be disclosed. What if your significant other found your handle and read your reviews? "Hey, that's when his fantasy baseball league meets!" The same applies to the provider in question. You can still convey all of the neccessary information in a non-specific way.
Month: Early, Mid, Late
Day: Weekday, Weekend
Time: Early morning (before 9am), Morning (9am-noon), Afternoon (noon-5), Evening/Night(6-midnight), Late night (you get the idea...)
Just my personal thoughts.