- From: Stephen T. Mohr <smohr@voicenet.com>
- Date: Thu, 29 Jul 1999 13:33:38 -0400
- To: <www-xml-schema-comments@w3.org>
Re: The issue in section 3.2.12 of the draft dated 6 May 1999. You may wish to address this issue within bounds by adding a Julian dateTime generated data type. While this stems from the Gregorian reform, algorithms are available for conveniently converting between Islamic and Hindu calendars; the Chinese calendar is a problematic exception. Julian dates are also used directly or with adjustment of the starting epoch in astronomical calculation. Thus, this well-established convention will open schema data types to a wide range of human calendars without introducing excessive numbers of new generated data types. This type takes the bounded range [0...2914671.5) and has an optional constraining facet epoch to denote which Julian epoch applies. If the facet does not appear, the first epoch (noon 1 January 4712 BC - noon 31 December AD 3267) is assumed. Note the various values for denoting the date of Gregorian calendar adoption and the date of the new year in pre-Grorian eras are not required for the data type as this is needed solely for retrieving a localized value. -- Stephen Mohr Senior Systems Architect, Omicron Consulting
Received on Thursday, 29 July 1999 13:33:55 UTC