ISO date format seems to encourage the general public to use ISO date
and time formats, but its web pages do not fully match its own

Example - on the homepage:
   "Last modified: $Date: 2005/07/06 13:50:15"

Expected according to recommendation:
   "Last modified: $Date: 2005-07-06 13:50:15"

Further references:

Received on Thursday, 7 July 2005 15:01:58 UTC