Events entered into the Pownce desktop app are set as one day in advance of the one selected in the form. For instance, after selecting 4/19 in the form, the date would end up being 4/20 after clicking the Post It! button.
Perhaps this has something to do with the app's calendar date selector pop-up being Sunday as the first day of the week, while the web's calendar is Monday? Which is confusing enough on it's own.
On the Pownce Desktop Client Alpha 2, they have once again switched the time formating to minutes/hours/days ago to a date only system. I've noticed that this happens a few times and am really getting frustrated that I can't see how long ago the note was posted. I'm on a dial-up connection and the Pownce site loads slow, so I stick to the client. Please just stick with how long ago it was posted. Will make a lot of people happier.