Week Counter in JS+PHP

tick.js

    var EVENTDAY = '.esc_attr($day_number).'; // sunday
    var EVENTHOUR = '.esc_attr($hour_number).'; // 9am

    function getRemaining( now ) {

        if ( now == null ) now = new Date();

        var dow = now.getDay();
        // the "hour" for now must include fractional parts of the hour, so...
        var hour = now.getHours() + now.getMinutes()/60 + now.getSeconds()/3600;

        // how many days from current day until event day?
        var offset = EVENTDAY - dow;

        // if event day is past *OR* if today is the event day but the event time is past...
        if ( offset < 0 || ( offset == 0 && EVENTHOUR < hour ) ) {
            offset += 7;
        }

        // so this date (day of the month) is the next occurrence of the event:
        var eventDate = now.getDate() + offset;

        // and so then next occurrence of the event is at this time:
        var eventTime = new Date( now.getFullYear(), now.getMonth(), eventDate, EVENTHOUR, 0, 0 );

        // this is how many milliseconds from now to the next event occurrence
        var millis = eventTime.getTime() - now.getTime();

        // convert milliseconds to days/hours/minutes/seconds:
        var seconds = Math.round( millis / 1000 );
        var minutes = Math.floor( seconds / 60 );
        seconds %= 60;
        var hours = Math.floor( minutes / 60);
        minutes %= 60;
        var days = Math.floor( hours / 24 );
        hours %= 24;
        if ( days == 7 ) days = "0";
        if ( seconds < 10 ) seconds = "0" + seconds;
        if ( minutes < 10 ) minutes = "0" + minutes;
        if ( hours < 10 ) hours = "0" + hours;

        // and return that formatted pretty:
        if ( days == 0 ) {
        	return hours + "h" + minutes + "m" + seconds+ "s";
        } else if ( days == 1 ) {
	        return days + " dia, " + hours + "h" + minutes + "m" + seconds+ "s";
	    } else {
		    return days + " dias, " + hours + "h" + minutes + "m" + seconds+ "s";
		}
    }

    function tick() {

        document.getElementById("countdown").innerHTML = getRemaining();

        var d = new Date();

		var weekday = new Array(7);
		weekday[0]=  "Sunday";
		weekday[1] = "Monday";
		weekday[2] = "Tuesday";
		weekday[3] = "Wednesday";
		weekday[4] = "Thursday";
		weekday[5] = "Friday";
		weekday[6] = "Saturday";

		var n = weekday[d.getDay()];
		var h = d.getHours();

		//n = "Tuesday";
		//h = "16";

        //if (getRemaining().slice(0,10) == "6 dias e 2" || getRemaining().slice(0,11) == "0 dias e 00") {
	    if (n == "Sunday" && (h == "08" || h == "09" || h == "10" || h == "11" || h == "12" || h == "13")) {
			document.getElementById("tcvpb_service_box_countdown").innerHTML = "<style>#countdown-btn-on{display:block!important;}</style>";
	    } else if (n != "Sunday" && n != "Saturday" && h == "16" ) { //Wed Apr 13 2016 19:06:11 GMT-0400 (EDT)
        	document.getElementById("tcvpb_service_box_countdown").innerHTML = "<style>#countdown-btn-on-radio{display:block!important;}</style>";
        } else {
			document.getElementById("tcvpb_service_box_countdown").innerHTML = "<style>#countdown-btn-off{display:block!important;}</style>";
        }

    }
    setInterval( tick, 1000 ); // specifies once a second