How to get the "name of the day" of a date

HI,

I would like to say how to get the “name of the day” (Monday, …) or
the “number of the day” (1,2,3,4,5,6,7) of a date in Natural.

Thanks,
Carlo

DISPLAY *DATX (EM='Day 'O)                     
      / *DATX (EM=N(10),' 'L(10)' 'DD','YYYY) .