From "Ibn Rushd": Michel Edde has a short piece about the fall of Constantinople to the
Ottomans in 1453. He's still mourning.
He says Charles Helou while in office never signed any document on Tuesdays
because Constantinople fell on a Tuesday and that day should hence always be
considered as a nefarious day!
"Le mardi est aussi considéré comme un jour néfaste durant lequel on ne se
livre à aucune activité notable, et on ne signe aucun document privé ou public
important. C’est ainsi qu’agissait par exemple le regretté président Charles
Hélou."
see also the reader's comment in bold characters".