The debate and vote on the Semiprozine Hugo is currently scheduled for the Saturday WSFS Business Meeting. Unless the Friday meeting takes unusual action to adjust the agenda, the matter should come up shortly after 10:00 on Saturday. (There are some minor and uncontroversial matters scheduled for the first few minutes of the meeting.) It is not possible to give a precise time when the matter will come to a vote.
All of this could change if the Preliminary Business Meeting on Friday at 10:00 takes action to adjust the agenda. I will try to post here if that happens, but people at the convention should check the convention newsletter for WSFS bulletins.