I ran the 'date' command on the VPS that serves up this web site and saw that it was returning the time in the MSK time zone. Well I don't live in Moscow (that's what MSK's for). Instead, the server and I live in the Eastern time zone of North America.

To change the timezone to what is appropriate for where you live run the following:

dpkg-reconfigure tzdata

That will give you the option, using a simple wizard, to change your timezone to the one you want.