Aha! It looks like I’ve figured out why the timestamps weren’t working. Blogger was set to GMT -5:00 (Eastern TIme), and whenever I posted through Contribute, it took Contribute’s time, which was already GMT -5:00, and shaved another 5 hours off it.

Should be all fixed now though, so correct timestamps from here on out. and it even retroactively fixed all of the previous posts, so those are correct too. Thanks Blogger!