Hello, I'll be looking over this issue.
Feel free to look over at lib/database_functions.php and find the setMySqlTimezone($timeZone) at around line 213, and you can manually set the timezone from there.
The format in coding is +00:00 where +00 equals the number of timezones to the left/right of the GMT. Based on your original post, you would have it as -05:00.
Hans Marcon
PHP Programmer (In Training)
interactivetools.com