Alright well this is a little random but I asked someone what “R” stood for and well she replied Thursday. So than I asked, “What is Saturday and Sunday?” she replies “I don’t know I never really thought of that” so what do I do I google it.
The answer is “U” for Sunday and “S” for Saturday.
U – Sunday
M – Monday
T – Tuesday
W – Wednesday
R – Thursday
F – Friday
S – Saturday