Date format: YYYY-MM-DD
edit: As noted by @Sean Allred, datetime
has been superseded by datetime2
.
Using the package datetime with the option yyyymmdd
as
\usepackage[yyyymmdd]{datetime}
you just change the value of \dateseparator
to replace the default /
by -
(or --
if you want).
\renewcommand{\dateseparator}{--}
Also as noted by @Vincent, you can define your own date format.
My solution needs no packages. The only thing you need to know is that the primitive registers \day
, \month
and \year
include the desired information:
\def\mydate{\leavevmode\hbox{\the\year-\twodigits\month-\twodigits\day}}
\def\twodigits#1{\ifnum#1<10 0\fi\the#1}
The date in my format: \mydate.
According to the link of Sigur:
\usepackage{datetime}
\newdateformat{specialdate}{\THEYEAR-\twodigit{\THEMONTH}-\twodigit{\THEDAY}}
\date{\specialdate\today}