I'll assume you know the year as well... (Otherwise you can't: It is indeterminate.) Time::Local and localtime together can get it for you:

use Time::Local 'timelocal_nocheck';

(undef,undef,undef,undef,undef,undef,$wday,undef,undef) = localtime(ti
+melocal_nocheck(0,0,0,$day_of_year,0,$year));

[download]

(If I'm reading the docs right, that should work. It's not quite explicitly stated.)

In reply to Re: weekday from dayofyear by DStaal
in thread weekday from dayofyear by slloyd

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