I often feel like Monday is a One-Day, Tuesday, a Two-Day, Wednesday a Three-Day, Thursday a Four-Day, and Friday, a Five-Day with Saturday being a Six-Day and Sunday, a Seven-Day.
Now IF I remember to think of this on a Monday as the 1st day of the Work Week or Weekdays, then it sets up the rest of the week to be counted as ' the 2nd, 3rd, 4th, 5th, 6th and 7th days'.
If I take note of the Actual Date, then again, I can do the Math of What the Dates are of the week and I will say, for instance Today being Mon May 22nd, Tues the 23rd, Wed 24th, Thur the 25th, Fri the 26th, then Sat
