date-format
node.js formatting of Date objects as strings. Probably exactly the same as some other library out there.
    npm install date-format
usage
    var format = require('date-format');
    format.asString(new Date()); //defaults to ISO8601 format
    format.asString('hh:mm:ss.SSS', new Date()); //just the time
Format string can be anything, but the following letters will be replaced (and leading zeroes added if necessary):
- dd - date.getDate()
 - MM - date.getMonth() + 1
 - yy - date.getFullYear().toString().substring(2, 4)
 - yyyy - date.getFullYear()
 - hh - date.getHours()
 - mm - date.getMinutes()
 - ss - date.getSeconds()
 - SSS - date.getMilliseconds()
 - O - timezone offset in +hm format
 
That's it.