Is there a way to get Bing’s photo of the day?

I think the best way is immitating the way they do it themselves through their AJAX calls.

They call this URL and extract the information through XML deserialization.

XML: http://www.bing.com/HPImageArchive.aspx?format=xml&idx=0&n=1&mkt=en-US

JSON: http://www.bing.com/HPImageArchive.aspx?format=js&idx=0&n=1&mkt=en-US

RSS: http://www.bing.com/HPImageArchive.aspx?format=rss&idx=0&n=1&mkt=en-US

The mkt attribute can obviously be changed to a different region than ´en-US´, but can also be opted out of entirely if you don’t care about a specific region.

Note that the _1366x768.jpg suffix that is added to the image names appears to be modifiable into different resolutions (like _1920x1080.jpg for full HD and possibly others).

Here’s a dump of the data as of 9/28/2013, in XML format.

<?xml version="1.0" encoding="utf-8"?>
<images>
    <image>
        <startdate>20130928</startdate>
        <fullstartdate>201309280000</fullstartdate>
        <enddate>20130929</enddate>
        <url>/az/hprichbg/rb/LakeTurkana_EN-US15976511099_1366x768.jpg</url>
        <urlBase>/az/hprichbg/rb/LakeTurkana_EN-US15976511099</urlBase>
        <copyright>Lava rock pools at the southern end of Lake Turkana, in Kenya (© Nigel Pavitt/Corbis)</copyright>
        <copyrightlink>http://www.bing.com/search?q=Lake+Turkana%2C+Kenya&amp;form=hpcapt</copyrightlink>
        <drk>1</drk>
        <top>1</top>
        <bot>1</bot>
        <hotspots>
            <hotspot>
                <desc>These are the southern reaches of a lake...</desc>
                <link>http://www.bing.com/maps/?v=2&amp;cp=2.794725~37.335197&amp;lvl=7&amp;dir=0&amp;sty=b&amp;q=Lake%20Turkana%2C%20Kenya&amp;form=hphot1</link>
                <query>That stretches for 180 miles, up into another country</query>
                <LocX>15</LocX>
                <LocY>33</LocY>
            </hotspot>
            <hotspot>
                <desc>This body of water was once called the Jade Sea.</desc>
                <link>http://www.bing.com/search?q=green+algae&amp;form=hphot2</link>
                <query>What gives the water here its sometimes vibrant hue?</query>
                <LocX>37</LocX>
                <LocY>42</LocY>
            </hotspot>
            <hotspot>
                <desc>One of the world's most powerful predators lives here.</desc>
                <link>http://www.bing.com/videos/search?q=Underwater+Croc+Cams+National+Geographic&amp;FORM=hphot3#view=detail&amp;mid=D25E1909D3514A8732C5D25E1909D3514A8732C5</link>
                <query>See some rare underwater footage of the beast</query>
                <LocX>66</LocX>
                <LocY>33</LocY>