PM and AM in dutch

See https://nl.wikipedia.org/wiki/12-uursnotatie which states 

"In het Nederlands spreekt men ook van voormiddag en namiddag (v.m. en n.m. of vm en nm)."  which means "In Dutch people also speak of morning (voormiddag)  and afternoon (namiddag) (v.m. and n.m. or vm and pm)."

locale/nl.js

@@ -63,6 +63,13 @@
         weekdaysShort: 'zo._ma._di._wo._do._vr._za.'.split('_'),
         weekdaysMin: 'zo_ma_di_wo_do_vr_za'.split('_'),
         weekdaysParseExact: true,
+        meridiemParse: /vm|nm/,
+        isPM: function (input) {
+            return input.charAt(0) === 'n';
+        },
+        meridiem: function (hours, minutes, isLower) {
+            return hours < 12 ? 'vm' : 'nm';
+        },
         longDateFormat: {
             LT: 'HH:mm',
             LTS: 'HH:mm:ss',