Standards for date / time values?

[John R. WIECZOREK]

Hi Lynn,

XML Schema, in its dateTime type, supports a subset of the ISO 8601 datetime
standard. The proposal for DwC2 currently recommends the
concepts EarliestDateCollected and LatestDateCollected, both as dateTime
types, to capture bounded or unbounded date/time combinations of arbitrary
specificity. These should be sufficient except where lists of dates or other
multiple date ranges are required for a single record - unless I'm missing
something, in which case I'd like to know.

Cheers,

John


On 2/23/06, Lynn Kutner <Lynn_Kutner at natureserve.org> wrote:
>
> Hi -
>
> I'm working with a suite of date attributes that can include a combination
> of precise dates, imprecise dates, and ranges of dates (and the same types
> of time values). We'd like to follow existing standards. If this sort of
> date / time standard exists, I'd appreciate leads to the appropriate
> resources.
>
> Thank you for your help -
> Lynn
>
> Lynn Kutner
> *Data Management Coordinator*
> *NatureServe*
> Email:    lynn_kutner at natureserve.org
> Phone:   (303) 541-0360
> ***www.natureserve.org*
>

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<div>Hi Lynn,</div>
<div>&nbsp;</div>
<div>XML Schema, in its dateTime type, supports a subset of the ISO 8601 datetime standard. The proposal for DwC2 currently recommends the concepts&nbsp;EarliestDateCollected and LatestDateCollected, both as dateTime types, to capture bounded or unbounded date/time combinations of arbitrary specificity. These should be sufficient except where lists of dates or other multiple date ranges are required for a single record - unless I'm missing something, in which case I'd like to know.
</div>
<div>&nbsp;</div>
<div>Cheers,</div>
<div>&nbsp;</div>
<div>John<br><br>&nbsp;</div>
<div><span class="gmail_quote">On 2/23/06, <b class="gmail_sendername">Lynn Kutner</b> &lt;<a href="mailto:Lynn_Kutner at natureserve.org">Lynn_Kutner at natureserve.org</a>&gt; wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<p><font face="Arial" size="2">Hi - </font></p>
<p><font face="Arial" size="2">I'm working with a suite of date attributes that can include a combination of precise dates, imprecise dates, and ranges of dates (and the same types of time values). We'd like to follow existing standards. If this sort of date / time standard exists, I'd appreciate leads to the appropriate resources.
</font></p>
<p><font face="Arial" size="2">Thank you for your help -</font> <br><font face="Arial" size="2">Lynn</font> </p><span class="sg"><br>
<p><font face="Comic Sans MS" size="2">Lynn Kutner</font> <br><i><font face="Comic Sans MS" color="#808080" size="2">Data Management Coordinator</font></i> <br><i><font face="Comic Sans MS" color="#808080" size="2">NatureServe
</font></i> <br><font face="Comic Sans MS" color="#808080" size="2">Email:&nbsp;&nbsp;&nbsp; <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:lynn_kutner at natureserve.org" target="_blank">lynn_kutner at natureserve.org
</a></font> <br><font face="Comic Sans MS" color="#808080" size="2">Phone:&nbsp;&nbsp; (303) 541-0360</font> <br><a><u></u><u><font face="Comic Sans MS" color="#0000ff" size="2">www.natureserve.org</font></u></a><font face="Comic Sans MS" size="2">
 </font></p></span></blockquote></div><br>