Pawshake do not set any drop off/pick up times, you will need to confirm this with the sitter on the booking.
However, overnight services such as pet boarding are charged per 24 hours. So if a dog is dropped off at 8:00am one day and collected at 8:00am the next day, this is considered one night. If the dog is dropped off at 08:00am one day and not collected until say 8:00pm the next day, it would be fair for the pet sitter to ask the owner to make a separate booking for doggy daycare in addition to the one for pet boarding.
Of course there is a great variety in the requirements of pet owners as far as pick up and drop off times go, so we do not like to be too prescriptive about this. It is much better if this is discussed in full during the meet and greet and the owner and sitter reach agreement between themselves on how the booking is to proceed.