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<br><div><div>On 16 Mar 2009, at 20:10, Tom Duhamel wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; ">It seems that pretty much everyone agrees on this:<br>- Allow the use of an alternate calendar, but only Gregorian is required to be understood by user agents<br>- We only require the user agent to display dates; they are free to do more if they like (conversion, ...) but are not required to.<br>- Calendar is specified in a new attribute ('calendar' or something similar) and the value of 'datetime' attibute is specified in the calendar specified by that new attribute<br>- If 'datetime' attribute is missing, try to interpret the content as an ISO date. User agent could print the content as is, or print in a more friendly way if desired (in case it was successfully read as a valid ISO date).<br>- If content is missing, print 'datetime' attribute (in a friendly way, if desired and set by user, or simply as is if unable to do better)<br>- If both content and datetime are present, print content on page and show a representation of the date in datetime with a mechanism such as a tool tip<br></span></blockquote><br></div><div>This seems overly complex to me.</div><div><br></div><div>Can we follow existing practice from TEI ie. datetime may only be Gregorian and no other calendar - calendar (if present) identifies the calendar in the original text (analogous to the way the HTML lang attribute indicates the language of the enclosed text).</div><div><br></div><div>So, a date marked up in a TEI document as</div><div><date calendar ="julian" value="1547-02-28">18th Feb. 1546</date></div><div>transforms to the following HTML</div><div><time calendar="julian" value="1547-02-28">18th Feb. 1546</date></div><div><br></div>My reasoning here is that TEI is already in widespread use, authors familiar with it will expect the same markup practices in HTML and one of the largest uses for historical dates as <time> elements will be transformation of existing TEI documents to HTML.<div><br></div><div>It seems dangerous, to me, to adopt a whole new standard for historical dates in HTML when there is an existing standard in wide use.</div><div>Essentially I'm asking that the spec for <time> mirror the existing spec for <date> to make it compatible with historical texts:</div><div><a href="http://www.tei-c.org/Guidelines/P4/html/ref-DATE.html">http://www.tei-c.org/Guidelines/P4/html/ref-DATE.html</a></div><div><br></div><div>Regards</div><div>Jim</div><div><br><div> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div>Jim O'Donnell</div><div><a href="mailto:jim@eatyourgreens.org.uk">jim@eatyourgreens.org.uk</a></div><div><a href="http://eatyourgreens.org.uk">http://eatyourgreens.org.uk</a></div><div><br></div><br class="Apple-interchange-newline"></span></span><br class="Apple-interchange-newline"> </div><br></div></body></html>