VegBank

In our XML stream, we have tons of date fields that are now being output like so:

<observation.obsStartDate>2001-10-24 01:00:00-06</observation.obsStartDate>

but we need to make them XML conformant, i.e. like this:
<observation.obsStartDate>2001-10-24T01:00:00-06:00</observation.obsStartDate>

which matches the pattern:
\-?([1-9][0-9][0-9][0-9]+)|(0[0-9][0-9][0-9])\-(0[1-9])|(1[0-2])\-(0[1-9])([12][0-9])|(3⁰¹)
T(([01][0-9])|(2[0-3]):[0-5][0-9]:([0-5][0-9])(\.[0-9]+)?)|(24:00:00(\.0+)?)
([+\-](0[0-9])|(1[0-4]):[0-5][0-9])?

as specified by w3.org:
http://www.w3.org/TR/xmlschema11-2/#dateTime

I don't know if other fields fail to validate, it's unlikely that other are wrong as other data types are more compatible.