days Of Week for weather info in angular

i want get days of week from data weather json , am useing this code '

 var dayNames = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
    var date = new Date();
$scope.wDay = dayNames[date.getDay()];

html

{{wDay}}

get result only one day 'sun' not all days of week

json data

`"daily": {
    "summary": "لا أمطار خلال الأسبوع مع درجات حرارة ترتفع حتى 50°C يوم الأربعاء",
    "icon": "clear-day",
    "data": [
      {
        "time": 1469912400,`