February 27, 2013

#1179: ISO 8601 explain

Public Service Announcement:

Our different ways of writing dates as numbers can lead to online confusion. That’s why in 1988 ISO set a global standard numeric date format. This is the correct way to write numeric dates:

2013-02-27

The following formats are therefore discouraged:

*02/27/2013

*02/27/13

*27/02/2013

*27/02/13

*20130227

*2013.02.27

*27.02.13

*27-02-13

*27.2.13

*2013. II. 27.

*27⁄2-13

*2013.158904109

*MMXIII-II-XXVII

*MMXIII LVII⁄CCCLXV

*1330300800

*((3+3)×(111+1)-1)×3/3-1/33

*   2  272013 [the numbers 2013, 02, and 27 written overlapping each other]

*10/11011/1101

*02/27/20/13

*2053112674378

*[A black cat with 2-27-13 scrawled across its body in dripping white paint.]

**Cat: Hissss