You configured (or it's default) Pegasus to apply timezone correction to the maillist so that Pegasus shows all mails with date converted to your timezone. Hmm - translated directly from german Pegasus if a message marked in mailölist:

Message - > [x] Apply timezone corretion

If you open the mail or print it, Pegasus shows the real date-header (with local time of the sender), but that should be "March 14, 2018, 03:44 +0400"

bye    Olaf

When I print or open a email, the Date Sent is +4 hours (day number, and hours), such that an email in a list dated March 13, 2018,  23:44 becomes March 14, 2018, 03:44.  I fail to find a solution to this. H E L P !