>>> "UB" == Uwe Brauer <oub@mat.ucm.es> writes:

   > Hi

   > I only now realized that the day of the week of week in a org timestamp
   > is not exported.

(let ((org-time-stamp-custom-formats
       '("<%A, %B %d, %Y>" . "<%A, %B %d, %Y %H:%M>"))
      (org-display-custom-times 't))
  (org-html-export-to-html))

Seems to solve the issue