i assume the above bolded then starts after first night fall? if not, then there was day 1 and day 2 for each so far. i could easily be reading that wrong.
I think that the mayor/don would send in their invest during the day (now), and it would be revealed to them in a PM at nightfall. This means that they've only had 1 invest completed so far (Revealed to only them on night 1)