Is there a single character day of the week convention?
abbreviation, data-representation, dayofweek
Solution
Perhaps this is an authority? They recommend, M T W R F S U http://eventguide.com/topics/one_digit_day_abbreviations.html
In any case, what's probably most important is that the end-user has documentation telling which arbitrary choice you've decided on.
Problem
Is there a single character convention for the days of the week in English (or programmer-specific) and if so what is it? I realize this could be an English language question but I think it has special significance for programmers. Maybe something like: ``` Monday Mon MO M Tuesday Tue TU T Wednesday Wed WE W Thursday Thu TH U Friday Fri FR F Saturday Sat SA S Sunday Sun SU N ```