Descending order for list-divider in AngularJs - angularjs

Question

How may I order the <div class="item item-divider"> in descending way, where on the top I would like to have the most recent date?
// index.html
...
<ion-content>
<div ng-repeat="(date,list) in items">
<div class="item item-divider">
{{date}}
</div>
<ul class="list">
<li class="item item-icon-right" ng-repeat="item in list">
<h2>{{item.name}} {{item.surname}}</h2>
</li>
</ul>
</div>
</ion-content>
...
-------------------------------------------------------------------------------------------------
// app.js
angular.module('ionicApp', ['ionic'])
.controller('MyCtrl', function($scope) {
$scope.items = {
'11/12/2014':[
{name:'mark',surname:'john',birth:'11/12/2014'}
],
'12/12/2014':[
{name:'tom',surname:'smith',birth:'12/12/2014'}
{name:'carl',surname:'northon',birth:'12/12/2014'}
]
}
});

Answer 1

Why not sort the object itself, before passing it to angular.
function sortObjectByKeys(object, order) {
var sortedObject = {}, key, tempKeyArray = [];
for (key in object) {
if (object.hasOwnProperty(key)) {
tempKeyArray.push(key);
}
}
// You can also retrieve all the keys using Object.keys() method and then sort them..
tempKeyArray.sort(function(a, b){return b - a});
for (key = 0; key < tempKeyArray.length; key++) {
sortedObject[tempKeyArray[key]] = object[tempKeyArray[key]];
}
return sortedObject;
}

Answer 2

Can you change the data-structure to have two keys, 'date' and 'people'? Then you could do
items | orderBy:'date'

Answer 3

This should work fine:
$scope.mysort = function(obj){
var sortedObject = {}, key, tempKeyArray = [];
for (key in obj) {
if (obj.hasOwnProperty(key)) {
tempKeyArray.push(key);
}
}
tempKeyArray.sort(function(a, b){
var parts = a.split("/");
a = new Date(parts[2], parts[1] - 1, parts[0])
parts = b.split("/");
b = new Date(parts[2], parts[1] - 1, parts[0]);
return b-a;
});
for (key = 0; key < tempKeyArray.length; key++) {
sortedObject[tempKeyArray[key]] = obj[tempKeyArray[key]];
}
return sortedObject;
}