Whatever they let me get away with! OK so I generally plan out in advance what I can do remotely and what I need to be on site for. If it's a fully remote day then I will probably roll out of bed and not put pants on around 10-11 AM and then complete whatever I need to - there's no regular end time, I work until I'm done, maybe it's 4, maybe it's 11:30, just depends on what does or doesn't go wrong, if I'm on site then I tend to get there first thing in the morning, 8-9ish unless it's a day of installation/patches and whatnot, those tend to go overnight, and then I have to be available to everyone who complains that their little horse icon disappeared after the update and I spend half an hour trying to figure out what they are talking about