Hi. As I understand, you need 2 transforms between
<xxxDateTime>2017-12-06-00.00.00</xxxDateTime>
and
<xxxDateTime dateTimeTagFormat="xsd">2017-12-06T00:00:00</xxxDateTime>
Relevant Skills and Experience
I can provide such XSL Transforms, or modify the ones you provide.
Proposed Milestones
$30 USD - 2 XSLT transforms.
Which version of XSLT?
How carefully to check format before transforms?
Are more samples available?