Why?
Well, today is President's day --
which is one of the days that the Post Office has a holiday.
And speaking of Holidays --
This is not the only day this year when you don't get and can't send any mail.
We have already had two such holidays this year --
and several more are scheduled.
To see the list of when there will be no mail service
HERE'S THE LINK to the 2018 Post office Holidays
