Ich kenn es so:

Mon Tues Wed Thu Fri Sat Sun

Super, danke! :-)

Ich kenn (eher):
"Sun", "Mon", "Tue", "Wed", "Thr", "Fri", "Sat".

(Typisch und traurig, MBMN, dass Wikipedia derartiges Wissen so gut wie gar nicht mehr kennt.)

Was soll an der Reihenfolge so relevant oder todtraurig sein?

In den meisten christlichen Ländern fängt die Woche am Sonntag an, außer im bösen aufgeklärten Europa, wo sich der Montag durchgesetzt hat. In arabischen Ländern wiederum ist anscheinend der Samstag der Wochenbegonn.

Kein Grund, den Kopf hängen zu lassen, dynamo ...

"Thr"? Also "Thur" würde mir nicht allzusehr auffallen, obwohl ich "Thu" für gebräuchlicher halte, aber "Thr" habe ich noch nie gesehen.

Und wikipedia weiß selbstverständlich, wann die Woche anfängt:
http://en.wikipedia.org/wiki/Seven-day_week#W...

Thr doesn't exist. It's either "Thur/Thurs" or very uncommonly, "Thu"

#5 usw.
> "Thr"?
Oh, mein Typo -- tut mir leid.
(Kann's ja auch hier leider nicht durch wikifizieren prüfen bzw. nachweisen.)

#6
> Und wikipedia weiß selbstverständlich, wann die Woche anfängt

Na wenigstens etwas ...

p.s.

So falsch hab ich mich wohl doch nicht erinnert:

http://www.google.de/search?hl=de&q=mon+tue+w...

Aber das ist natürlich in der Minderheit gegenüber

http://www.google.de/search?hl=de&q=mon+tue+w...

Google sagt (wie verlässlich auch immer):

"Mon Tue Wed Thu": 58 Mio Treffer
"Mon Tue Wed Thur": 338.000 Treffer
"Mon Tue Wed Thurs": 63.800 Treffer

und (für mich überraschend):
"Mon Tue Wed Thr": 113.000 Treffer.

Danach plädiere ich immer noch für "Thu".

Another shorter system of abbreviations is
Su Mo Tu We Th Fr Sa
Some universities/colleges use
M T W R F
for the weekdays in their academic calendars, i.e., there are no abbreviations for Saturday/Sunday since there are no classes on these days.

It depends how much space you have available. If you have room for four or five letters, then Tues, Thur or Thurs are common enough. If you want them all the same, just take the first three, or two, letters.

(The week does of course begin on Sunday, but we've had that discussion before.)

Sun. Mon. Tues. Wed. Thurs. Fri. Sat. - traditional

(Thur. is also understandable but in my experience not common. Have never seen Thr. in this context and would probably assume it was a mistake.)

Sun Mon Tue Wed Thu Fri Sat - computer era

Su Mo Tu We Th Fr Sa - understandable but less common in my experience

M T W Th F - normal short forms, e.g., MWF classes, TTh classes

M T W R F - Huh? Have never seen this in my life. It would probably take me a moment to figure out that these were meant to be days of the week.

I had to laugh though: R for, ahem, R'sday is a work of genius ;)

@#13:
Just google "R for Thursday" and you'll see that many universities/colleges do indeed use it.

@#13:
Sorry I meant to write it like this:
Just google "R for Thursday" and you'll see that many universities/colleges do indeed use it.

Learn something new every day. But why R and not Q?

Just google "R for Thursday" and you'll see that many universities/colleges do indeed use it.

In the UK too? I've had a quick Google and noticed a number of North American-looking sites. I don't recall ever seeing it in the UK. Things might have changed since my uni days, though! :-)

It may be an American university convention, but as LK indicates, it is (becoming) fairly common. The University of California and California State University systems use it throughout their campuses. I can't speak for UK.

Edit: "R for Thursday", that is.