On Fri, Apr 4, 2014 at 5:41 AM, kjj <bitcoin-devel@jerviss.org> wrote:

Matt Whitlock wrote:
> The creation date in your BIP header has the wrong format. It should be 01-04-2014, per BIP 1.
>

At first, I thought this was a second April Fool's joke, but then I
looked and saw that all of the BIPs really do use this format.  As far
as I can tell, we are using this insane format because RFC 822 predates
ISO 8601 by half a decade.

Since we don't have half a gajillion mail servers to patch, we could, if
we desired, adopt a sensible date format here.  The cost to the
community would be minimal, with probably not more than a half dozen
people needing to update scripts.  It could even be as simple as one guy
running sed s/parseabomination/parsedate/g

BIPs were based on Python PIPs, PIPs use this same ordering but spell out the month like '1-Oct-2000'. This is slightly more readable than our format.