Tue, 21 Jun 2016 19:32:15 +0200 Otto Moerbeek <o...@drijf.net> > Cal uses the ISO numbers (which is what you describe, the first week > of a year is the week containing the first Thursday of the year)) if > both -m and -w are given: > > [otto@mini:52]$ cal -wm jan 2016 > January 2016 > Mo Tu We Th Fr Sa Su > 1 2 3 [53] > 4 5 6 7 8 9 10 [ 1] > 11 12 13 14 15 16 17 [ 2] > 18 19 20 21 22 23 24 [ 3] > 25 26 27 28 29 30 31 [ 4] > > -Otto
Quick reference links: ISO week date [https://en.wikipedia.org/wiki/ISO_week_date] ISO 8601 [https://en.wikipedia.org/wiki/ISO_8601] M. Kuhn: A summary of ISO date & time notation [http://www.cl.cam.ac.uk/~mgk25/iso-time.html]
