Click on time, advance 1 hour, done and forgot about.
Unfortunately that's not sufficient: not only the time but the time
zone needs to be corrected. Your computer thinks you're on time UTC
minus 5 hours (Central Daylight Time), but based on your comment I
infer that you're actually in Eastern Daylight Time. So every email
you send and every article you post to Usenet has an incorrect time
stamp.
Example: your article was posted at 0754 your time, with a -0500 time
zone, meaning 1254 Universal time (formerly GMT); therefore according
to your timestamp you posted at 0854 Eastern Daylight Time. If you're
in Eastern Daylight time, your article was actually posted at 1154
UTC.
Everything you send will be dated an hour later than it was actually
sent, thus screwing up any threads that you and others post to. And
folks who reply promptly to your emails will be sending their replied
before you sent the emails they reply to.
See
and use TZEDIT to fix your time zone.