JF Calculator

jfcalc.js

const dates = require("ringo/utils/dates");

const dayToFind = "Mon";

for (let i = 5; i < 12; i++) {
   let dom = new Date(2016, i, 1);

   while(dates.format(dom, "EEE", java.util.Locale.US) !== dayToFind) {
      dom = dates.add(dom, 1, "day");
   }

   print(dates.format(dom, "dd. MMMM YYYY' 19:00'", java.util.Locale.GERMAN));
}