Merge pull request #25 from nick-novak/master

xml date fix

.eleventy.js

@@ -16,7 +16,7 @@ module.exports = function(eleventyConfig) {
 
   // https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-date-string
   eleventyConfig.addFilter('htmlDateString', (dateObj) => {
-    return DateTime.fromJSDate(dateObj).toFormat('yyyy-LL-dd');
+    return DateTime.fromJSDate(dateObj, {zone: 'utc'}).toFormat('yyyy-LL-dd');
   });
 
   // Get the first `n` elements of a collection.