Curious as to why this is...

International Standard. If you look across the corporate world you will always see an R vs TH on calendars using single character abbreviations.

i've never heard of that. And I've been coding calendar tools for websites and databases for years now.

I didn't do it to meet any international standard, but I thought it was a pretty useful convention to remove ambiguity when I was at university (which used R instead of T in it's scheduling).

I looked for a good while off google and wiki and couldn't even find an indicator of anything having to do with using R for Thursday. I'm intrigued to say the least regardless of the countless people telling me to fix a fubar.

My experience was at school, like I said. They used R for the calendar in the scheduling to remove ambiguity when presenting the schedule something like this:

Class 101, MTF, 10:30-11:20

Which, unambiguously means Monday,tuesday,Friday

Compared with Class 102 MRF 10:30-11:20

Which unambigously means Monday,Thursday,Friday

It was that that I found so intriguing and why I decided to use R for the calendar.

Any scheduling system I've ever used has always utilized 'R' to denote Thursday, to avoid possible confusion with Tuesday.

That said, I've seen 'Th' used too, but less often.

We always used R at school as well and it stuck with me.

I've always said to my guildies who asks about it thats its Chops being Chops - don't try and understand him

Haha been thinking of this aswell, why there have been a R istead of a T/Th, but think i will use you answer for the questions i get about it aswell..