YouTubeのフィードのデータが実際のデータと異なるのはなぜですか？

Question

自分自身を試してください：たとえば、thisビデオのフィールドを取得しようとすると、ページに "published on 27/nov/2011"と表示されます。

しかし、XMLが返さhttp://gdata.youtube.com/feeds/api/users/zimbarvideo/uploads/?start-index=1&max-results=1 でYouTubeのAPIでXMLを取得することです：

それはすべて2011年11月27日で、どちらのデータフィールドに含まれているdoesntの

<?xml version='1.0' encoding='UTF-8'?> 
<feed xmlns='http://www.w3.org/2005/Atom' xmlns:media='http://search.yahoo.com/mrss/' xmlns:openSearch='http://a9.com/-/spec/opensearchrss/1.0/' xmlns:gd='http://schemas.google.com/g/2005' xmlns:yt='http://gdata.youtube.com/schemas/2007'> 
    <id>http://gdata.youtube.com/feeds/api/users/zimbarvideo/uploads</id> 
    <updated>2011-12-05T15:26:39.146Z</updated> 
    <category scheme='http://schemas.google.com/g/2005#kind' term='http://gdata.youtube.com/schemas/2007#video'/> 
    <title type='text'>Uploads by zimbarvideo</title> 
    <logo>http://www.youtube.com/img/pic_youtubelogo_123x63.gif</logo> 
    <link rel='related' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/users/zimbarvideo'/> 
    <link rel='alternate' type='text/html' href='http://www.youtube.com/profile?user=zimbarvideo#p/u'/> 
    <link rel='http://schemas.google.com/g/2005#feed' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/users/zimbarvideo/uploads'/> 
    <link rel='http://schemas.google.com/g/2005#batch' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/users/zimbarvideo/uploads/batch'/> 
    <link rel='self' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/users/zimbarvideo/uploads?start-index=1&amp;max-results=1'/> 
    <link rel='next' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/users/zimbarvideo/uploads?start-index=2&amp;max-results=1'/> 
    <author> 
    <name>zimbarvideo</name> 
    <uri>http://gdata.youtube.com/feeds/api/users/zimbarvideo</uri> 
    </author> 
    <generator version='2.1' uri='http://gdata.youtube.com'>YouTube data API</generator> 
    <openSearch:totalResults>274</openSearch:totalResults> 
    <openSearch:startIndex>1</openSearch:startIndex> 
    <openSearch:itemsPerPage>1</openSearch:itemsPerPage> 
    <entry> 
    <id>http://gdata.youtube.com/feeds/api/videos/lcQ-V9nFZgs</id> 
    <published>2011-11-28T07:21:41.000Z</published> 
    <updated>2011-11-28T15:33:45.000Z</updated> 
    <category scheme='http://schemas.google.com/g/2005#kind' term='http://gdata.youtube.com/schemas/2007#video'/> 
    <category scheme='http://gdata.youtube.com/schemas/2007/categories.cat' term='News' label='Notizie e politica'/> 
    <category scheme='http://gdata.youtube.com/schemas/2007/keywords.cat' term='progetto'/> 
    <category scheme='http://gdata.youtube.com/schemas/2007/keywords.cat' term='continuità'/> 
    <category scheme='http://gdata.youtube.com/schemas/2007/keywords.cat' term='bilinguismo'/> 
    <category scheme='http://gdata.youtube.com/schemas/2007/keywords.cat' term='precoce'/> 
    <title type='text'>285 - TG Cimbro - Zimbar Earde - Luserna</title> 
    <content type='text'>Zimbar Earde 285 del 26/11/2011 
     Inaugurazione scuola "progetto continuità -- bilinguismo precoce" "khlummane tritt vürsnen" 
     interv. a Luca Paolaz, Anna Maria Trenti Kaufman, Sieghart Camper, Monica Pedrazza, Ermenegildo Bidese. 
     È attivo dal 26/11/11 "Sostegno ai compiti" sab 10.00-12.00 in Biblioteca 
     L'istituto Ladino di Livinallongo/Santa Lucia in visita al KIL (19/11/2011) 
     Appuntamenti e invito alla Festa piano giovani degli Altipiani ai Virti - 3/12/2011</content> 
     <link rel='alternate' type='text/html' href='http://www.youtube.com/watch?v=lcQ-V9nFZgs&amp;feature=youtube_gdata'/> 
     <link rel='http://gdata.youtube.com/schemas/2007#video.responses' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/videos/lcQ-V9nFZgs/responses'/> 
     <link rel='http://gdata.youtube.com/schemas/2007#video.related' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/videos/lcQ-V9nFZgs/related'/> 
     <link rel='http://gdata.youtube.com/schemas/2007#mobile' type='text/html' href='http://m.youtube.com/details?v=lcQ-V9nFZgs'/> 
     <link rel='self' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/users/zimbarvideo/uploads/lcQ-V9nFZgs'/> 
     <author> 
     <name>zimbarvideo</name> 
     <uri>http://gdata.youtube.com/feeds/api/users/zimbarvideo</uri> 
     </author> 
     <gd:comments> 
     <gd:feedLink href='http://gdata.youtube.com/feeds/api/videos/lcQ-V9nFZgs/comments' countHint='0'/> 
     </gd:comments> 
     <media:group> 
     <media:category label='Notizie e politica' scheme='http://gdata.youtube.com/schemas/2007/categories.cat'>News</media:category> 
     <media:content url='http://www.youtube.com/v/lcQ-V9nFZgs?version=3&amp;f=user_uploads&amp;app=youtube_gdata' type='application/x-shockwave-flash' medium='video' isDefault='true' expression='full' duration='771' yt:format='5'/> 
     <media:content url='rtsp://v3.cache5.c.youtube.com/CigLENy73wIaHwkLZsXZVz7ElRMYDSANFEgGUgx1c2VyX3VwbG9hZHMM/0/0/0/video.3gp' type='video/3gpp' medium='video' expression='full' duration='771' yt:format='1'/> 
     <media:content url='rtsp://v8.cache4.c.youtube.com/CigLENy73wIaHwkLZsXZVz7ElRMYESARFEgGUgx1c2VyX3VwbG9hZHMM/0/0/0/video.3gp' type='video/3gpp' medium='video' expression='full' duration='771' yt:format='6'/> 
     <media:description type='plain'>Zimbar Earde 285 del 26/11/2011 
      Inaugurazione scuola "progetto continuità -- bilinguismo precoce" "khlummane tritt vürsnen" 
      interv. a Luca Paolaz, Anna Maria Trenti Kaufman, Sieghart Camper, Monica Pedrazza, Ermenegildo Bidese. 
      È attivo dal 26/11/11 "Sostegno ai compiti" sab 10.00-12.00 in Biblioteca 
      L'istituto Ladino di Livinallongo/Santa Lucia in visita al KIL (19/11/2011) 
      Appuntamenti e invito alla Festa piano giovani degli Altipiani ai Virti - 3/12/2011</media:description> 
      <media:keywords>progetto, continuità, bilinguismo, precoce</media:keywords> 
      <media:player url='http://www.youtube.com/watch?v=lcQ-V9nFZgs&amp;feature=youtube_gdata_player'/> 
      <media:thumbnail url='http://i.ytimg.com/vi/lcQ-V9nFZgs/0.jpg' height='360' width='480' time='00:06:25.500'/> 
      <media:thumbnail url='http://i.ytimg.com/vi/lcQ-V9nFZgs/1.jpg' height='90' width='120' time='00:03:12.750'/> 
      <media:thumbnail url='http://i.ytimg.com/vi/lcQ-V9nFZgs/2.jpg' height='90' width='120' time='00:06:25.500'/> 
      <media:thumbnail url='http://i.ytimg.com/vi/lcQ-V9nFZgs/3.jpg' height='90' width='120' time='00:09:38.250'/> 
      <media:title type='plain'>285 - TG Cimbro - Zimbar Earde - Luserna</media:title> 
      <yt:duration seconds='771'/> 
     </media:group> 
     <yt:statistics favoriteCount='0' viewCount='23'/> 
     </entry> 
    </feed> 

：

<published>2011-11-28T07:21:41.000Z</published> 
<updated>2011-11-28T15:33:45.000Z</updated> 

YouTubeのAPIの何が問題になっていますか？

Answer 1

アップロードされた日付（ページ上）と公開された日付（gdataフィード）のタイムゾーンが異なります。前者はPST、後者はUTCです。