Actualización

app/Resources/public/assets/moment/src/lib/units/timezone.js

@@ -0,0 +1,16 @@
+import { addFormatToken } from '../format/format';
+
+// FORMATTING
+
+addFormatToken('z', 0, 0, 'zoneAbbr');
+addFormatToken('zz', 0, 0, 'zoneName');
+
+// MOMENTS
+
+export function getZoneAbbr() {
+    return this._isUTC ? 'UTC' : '';
+}
+
+export function getZoneName() {
+    return this._isUTC ? 'Coordinated Universal Time' : '';
+}