Hi @LittleFirework Take this module doomsday and change a few lines…

I have tried to install this module, but it didn’t work. If I disable this module in config everything works fine. If i start with this module i get a black screen. In dev mode, i get an error DevTools was disconnected from the page …
Do someone knows whats going wrong? I followed the instruction during the installation.

Module.register("MMM-doomsDay", {
    // Default module config.
    defaults: {
        doomsDay: "2018-03-01 24:00:00", // YYYY-MM-DD HH:MM:SS
        updateInterval: 60 * 60 * 1000,
        toWhat: "Leaving for Paris!",
        singular: "Left ",
        plural: "Left",
        present: "Let's Fly!",
        timesUp: "death and despair, your time is up."
    },

    // Define start sequence.
    start: function() {
        var self = this;

        Log.info("Starting module: " + this.name);

        if (this.config.updateInterval < 10 * 60 * 1000) {
            // 10 min minimum update interval
            this.config.updateInterval = 10 * 60 * 1000;
        }
        setInterval(function() {
            self.updateDom();
        }, this.config.updateInterval);
    },

    // Define required styles
    getStyles: function () {
        return ["MMM-doomsDay.css"];
    },

    // Override dom generator.
    getDom: function() {
        var doomsDay = new Date(this.config.doomsDay);
        var now = new Date();
        var timeparser = Date.parse(doomsDay) - Date.parse(now);
        var weeks = Math.floor(timeparser / (1000 * 60 * 60 * 24 * 7));
        var days = Math.floor((timeparser % (1000 * 60 * 60 * 24 * 7)) / (1000 * 60 * 60 * 24));
        var hours = Math.floor((timeparser % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
        var minutes = Math.floor((timeparser % (1000 * 60 * 60)) / (1000 * 60));
        var seconds = Math.floor((timeparser % (1000 * 60)) / 1000);
        daysLeft = weeks + " Wochen " + days + " Tage " + hours + " Stunden " + minutes + " Minuten " + seconds + " Sekunden ";;
        //daysLeft = Math.floor(timeparser/(1000*60*60*24));

        var wrapper = document.createElement("div");
        var headerD = document.createElement("span");
        headerD.innerHTML = this.config.toWhat + "<br />";
        headerD.className = "doooom";

        if (daysLeft == 0) {
            var daysLeft = document.createElement("span")
            timeLeft.innerHTML = this.config.present;
            timeLeft.className = "timeLeft";
          }

        else if (daysLeft == 1) {
          var timeLeft = document.createElement("span");
          timeLeft.innerHTML = daysLeft + " " + this.config.singular;
          timeLeft.className = "timeLeft";
          }
        else if (daysLeft >= 2) {
            var timeLeft = document.createElement("span");
            timeLeft.innerHTML = daysLeft + " " + this.config.plural;
            timeLeft.className = "timeLeft";
          }

        else {
          var timeLeft = document.createElement("span")
          timeLeft.innerHTML = daysLeft  + " " + this.config.plural;
          timeLeft.className = "timeLeft";
        }

        wrapper.appendChild(headerD);
        wrapper.appendChild(timeLeft);
        return wrapper;
    }}
);

config:

{
    			module: 'MMM-doomsDay',
    			position: 'bottom_right', // This can be any of the regions, best results in center regions
    			config: {
        			doomsDay: "2018-02-09 12:00:00", // YYYY-MM-DD HH:MM:SS, Do not alter the time, just the date
        			updateInterval: 1000 * 60 * 60 * 4,
				toWhat: "Your text",
        			singular: '',
				plural: '',

        // See 'Configuration options' for more information.
    }
},

I know this is not really a nice code because I’m a noob… but it works ;o)