This is indeed intended. It's a relatively common convention to use R as Thursday, simply to remove the redundancy with Tuesday.
I guess it is time to say:
"Working as intended."
The funny thing is that this is probably the 4th post at least seeking to point out that Thursday should be abbreviated "TH" when by international convention as chops indicated the commonly accepted single character abbreviation is "R".
-- Six Demon Bag Jack Burton: Hey, what more can a guy ask for? Egg Shen: Oh, a six-demon bag! Jack Burton: Terrific, a six-demon bag. Sensational. What's in it, Egg? Egg Shen: Wind, fire, all that kind of thing!