Question

Is there an easy way to convert a date object to GMT time, but also display in ISO 8601 format?

Answer 1

Is there an easy way to convert a date object to GMT time

Yes:

var d = new Date();
d.toGMTString()

but also display in ISO 8601 format?

Function taken form here (they also have an ISO 8601 parser there)

function ISODateString(d) {
    function pad(n) { return n<10 ? '0'+n : n }
    return      d.getUTCFullYear()
    + '-' + pad(d.getUTCMonth()+1)
    + '-' + pad(d.getUTCDate())
    + 'T' + pad(d.getUTCHours())
    + ':' + pad(d.getUTCMinutes())
    + ':' + pad(d.getUTCSeconds())
    + 'Z'
}