I wondered how to interpret the timestamp which is shown with the posts, because I was curious about the local time a user had written a post. Todd, our webmaster, explains to me:
"It's by server time in the U.S. eastern time zone, and written in U.S. format (mm/dd/yy)"
Which should currently be EDT= GMT/UTC -4
On my screen I see the format displayed as (DDD, mm/dd/yy - hh:mm), which is just fine.