Doodleページはこちらから。
http://www.google.com/doodles/happy-holidays-2019-day-1
クリスマスの風習がある四十数カ国のGoogleがこのロゴに変わっています。
Doodleページ上ではオランダ、スロバキア、チェコのGoogleも提示対象ですが、通常ロゴのままです。
オランダは25・26日がクリスマス、チェコは25日がクリスマス、26日がボクシング・デーと、いずれの国も25・26日が祝祭日なので、上記の3カ国は24日から3日間、1日ずらしでロゴを提示するかもしれません。

ロゴをクリックすると「ハッピー ホリデー」に関する検索ページに飛びます。
ロゴ画像のタイトルは「2019 年ハッピー ホリデー」です。
検索結果画面左上のロゴ画像も載せておきます。

関連Doodleページはこちらから。
http://www.google.com/doodles/holidays-2018-northern-hemisphere-day-1
http://www.google.com/doodles/holidays-2018-northern-hemisphere-day-2
http://www.google.com/doodles/holidays-2018-northern-hemisphere-day-3
http://www.google.com/doodles/holidays-2018-southern-hemisphere-day-1
http://www.google.com/doodles/holidays-2018-southern-hemisphere-day-2
http://www.google.com/doodles/holidays-2018-southern-hemisphere-day-3
http://www.google.com/doodles/holidays-2018-day-1
http://www.google.com/doodles/holidays-2018-day-2
http://www.google.com/doodles/holidays-2018-day-3
http://www.google.com/doodles/holidays-2017-day-1
http://www.google.com/doodles/holidays-2017-static
http://www.google.com/doodles/holidays-2017-day-2
http://www.google.com/doodles/holidays-2016-day-1
http://www.google.com/doodles/holidays-2016-day-1-warm-climates
http://www.google.com/doodles/holidays-2016-day-2
http://www.google.com/doodles/holidays-2016-day-2-warm-climates
http://www.google.com/doodles/holidays-2016-day-3
http://www.google.com/doodles/holidays-2016-day-3-warm-climates
http://www.google.com/doodles/holidays-2015-day-1
http://www.google.com/doodles/holidays-2015-day-2
http://www.google.com/doodles/holidays-2015-day-3
http://www.google.com/doodles/holidays-2014-day-1
http://www.google.com/doodles/holidays-2014-day-2
http://www.google.com/doodles/holidays-2014-day-3
http://www.google.com/doodles/holidays-2014-day-4
http://www.google.com/doodles/holiday-series-2013-1
http://www.google.com/doodles/holiday-series-2013-2
http://www.google.com/doodles/holiday-series-2013-3
http://www.google.com/doodles/holiday-series-2012-1
http://www.google.com/doodles/holiday-series-2012-2
http://www.google.com/doodles/happy-holidays-2011
http://www.google.com/doodles/happy-holidays-from-google-2010
http://www.google.com/doodles/happy-holidays-from-google-2009-1
http://www.google.com/doodles/happy-holidays-from-google-2009-2
http://www.google.com/doodles/happy-holidays-from-google-2009-3
http://www.google.com/doodles/happy-holidays-from-google-2009-4
http://www.google.com/doodles/happy-holidays-from-google-2009-5
http://www.google.com/doodles/happy-holidays-from-google-2008-1
http://www.google.com/doodles/happy-holidays-from-google-2008-2
http://www.google.com/doodles/happy-holidays-from-google-2008-3
http://www.google.com/doodles/happy-holidays-from-google-2008-4
http://www.google.com/doodles/happy-holidays-from-google-2008-5
http://www.google.com/doodles/happy-holidays-from-google-2007-1
http://www.google.com/doodles/happy-holidays-from-google-2007-2
http://www.google.com/doodles/happy-holidays-from-google-2007-3
http://www.google.com/doodles/happy-holidays-from-google-2007-4
http://www.google.com/doodles/happy-holidays-from-google-2007-5
http://www.google.com/doodles/happy-holidays-from-google-2006-1
http://www.google.com/doodles/happy-holidays-from-google-2006-2
http://www.google.com/doodles/happy-holidays-from-google-2006-3
http://www.google.com/doodles/happy-holidays-from-google-2006-4
http://www.google.com/doodles/happy-holidays-from-google-2006-5
http://www.google.com/doodles/happy-holidays-from-google-2005-1
http://www.google.com/doodles/happy-holidays-from-google-2005-2
http://www.google.com/doodles/happy-holidays-from-google-2005-3
http://www.google.com/doodles/happy-holidays-from-google-2005-4
http://www.google.com/doodles/happy-holidays-from-google-2005-5
http://www.google.com/doodles/happy-holidays-from-google-2004-1
http://www.google.com/doodles/happy-holidays-from-google-2004-2
http://www.google.com/doodles/happy-holidays-from-google-2004-3
http://www.google.com/doodles/happy-holidays-from-google-2004-4
http://www.google.com/doodles/happy-holidays-from-google-2004-5
http://www.google.com/doodles/happy-holidays-from-google-2003-1
http://www.google.com/doodles/happy-holidays-from-google-2003-2
http://www.google.com/doodles/happy-holidays-from-google-2003-3
http://www.google.com/doodles/happy-holidays-from-google-2003-4
http://www.google.com/doodles/happy-holidays-from-google-2003-5
http://www.google.com/doodles/happy-holidays-from-google-2002-1
http://www.google.com/doodles/happy-holidays-from-google-2002-2
http://www.google.com/doodles/happy-holidays-from-google-2002-3
http://www.google.com/doodles/happy-holidays-from-google-2002-4
http://www.google.com/doodles/happy-holidays-from-google-2002-5
http://www.google.com/doodles/happy-holidays-from-google-2001-1
http://www.google.com/doodles/happy-holidays-from-google-2001-2
http://www.google.com/doodles/happy-holidays-from-google-2001-3
http://www.google.com/doodles/happy-holidays-from-google-2001-4
http://www.google.com/doodles/happy-holidays-from-google-2000
http://www.google.com/doodles/happy-holidays-from-google-1999
■関連リンク
・【Wikipedia】クリスマス
・【コトバンク】ハッピーホリデーズ
・【Wikipedia】オランダ
・【Wikipedia】チェコ