I have requirement to convert SharePoint date and time to xsd date and time. can we do this in SharePoint. Any insights would be great.
I think you're asking how to change the way the date displays in SharePoint 2013. The formatting of dates and numbers can be changed by changing the locale in site settings, under site administration. You'll have to find a locale that works for you, I can tell you offhand that Lithuanian and Japanese locales format dates as YYYY-MM-DD.
Hope this helps!