Question: Rosemary Anne DiCarlo served as acting United States Ambassador to the United Nations following the resignation of an American public servant who was confirmed as UN ambassador by the U.S. Senate by unanimous consent on what date? 
Context: James Blair Cunningham (born 1952) is an American diplomat and the former United States Ambassador to Afghanistan.  Cunningham has served in various diplomat positions since graduating from Syracuse University in 1974.  Positions that he has previously held include Chief of Staff to NATO Secretary General Manfred Woerner (1989-1990), Deputy Advisor for Political Affairs at the United States Mission to the United Nations (1990-1992), Director of the State Department's Office of European Security and Political Affairs (1993-1995), Deputy Chief of Mission, Embassy of the United States in Rome (1996-2001), Acting United States Ambassador to the United Nations (2001), Consul General of the United States to Hong Kong and Macau (2005-2008) and the United States Ambassador to Israel (2008-2011). Susan Elizabeth Rice (born November 17, 1964) is an American public servant who served as the 24th United States National Security Advisor from 2013 to 2017.  She was formerly a U.S. diplomat, Brookings Institution fellow, and U.S. ambassador to the United Nations.  She served on the staff of the National Security Council and as Assistant Secretary of State for African Affairs during President Bill Clinton's second term.  She was confirmed as UN ambassador by the U.S. Senate by unanimous consent on January 22, 2009. Michael Arthur Raynor (born 1962) is an American Foreign Service Officer specializing in relations with Africa.  He has been confirmed by the United States Senate as the next United States Ambassador to Ethiopia.  He previously served as the Director of the Office of Career Development and Assignments in the Bureau of Human Resources of the United States Department of State.  Raynor served as United States Ambassador to Benin from 2012 to 2015 after being nominated by President Barack Obama and confirmed by the U.S. Senate.  Prior to his post in Benin, he was deputy executive director and then executive director of the Bureau of African Affairs. Rosemary Anne DiCarlo (born 1947) is an American diplomat who served as acting United States Ambassador to the United Nations following the resignation of Susan Rice to become the National Security Advisor.  DiCarlo is a career member of the foreign service and has held overseas assignments in U.S. Embassies in Moscow and Oslo. Scot Alan Marciel (born 1958) is an American diplomat and served as Principal Deputy Assistant Secretary to the Bureau of East Asian and Pacific Affairs until February 2016.  He was confirmed by the U.S. Senate to be the United States Ambassador to Burma on January 28, 2016.  He was the United States Ambassador to Indonesia from August 2010 until July 2013.  Marciel has worked for the United States Department of State since 1985.  He has served in various capacities abroad and in particular was the United States Ambassador to the Association of Southeast Asian Nations prior to his nomination in Indonesia.  He is a graduate of the University of California, Davis and the Fletcher School of Law and Diplomacy. Ngedikes "Olai" Uludong is a Diplomat from the Republic of Palau, currently serving as the Permanent Representative from Palau to the United Nations and the Palau Ambassador to the European Union in the Kingdom of Belgium.  Prior to her role as a diplomat, Uludong was Climate Change Advisor in environmental policy and management throughout the Micronesia and Pacific region.  She is an active public servant that has coordinated environment and climate change work in the Republic of Palau, Republic of the Marshall Islands, Republic of Nauru, Republic of Maldives, the United Nations Framework Convention on Climate Change (UNFCCC) process, and served as the Lead Negotiator for the United Nations Negotiating Bloc: The Alliance of Small Islands States (AOSIS) in New York City.  As the Current Palau's Ambassador to the European Union and Ambassador on Climate Change. Luis E. Arreaga-Rodas (born 1952) is a Guatemalan American diplomat and government official who has been confirmed as the next United States Ambassador to Guatemala.  He previously served as United States Ambassador to Iceland from 2010 until 2013.  In January 2016, he was appointed Principal Deputy Assistant Secretary of State for the Bureau of International Narcotics and Law Enforcement Affairs.  In June 2017, President Donald Trump nominated Arreaga to become the United States Ambassador to Guatemala.  This nomination was confirmed by the U.S. Senate on August 3, 2017. Tulinabo Salama Mushingi (born August 4, 1956) is an American diplomat who currently serves a joint appointment as United States Ambassador to Senegal and United States Ambassador to Guinea-Bissau.  He previously served as the United States Ambassador to Burkina Faso from 2013 to 2016.  He also served in the executive offices of Secretaries of State John F. Kerry and Hillary Clinton.  In February 2017, President Donald Trump nominated Mushingi to serve concurrently as United States Ambassador to Senegal and United States Ambassador to Guinea-Bissau.  Mushingi had originally been nominated for the position by outgoing President Barack Obama in January 2017.  When Trump took office, he withdrew Mushingi's nomination before renominating him for the same position.  He was confirmed by the United States Senate by voice vote on May 18, 2017. Karen Brevard Stewart (born 1952) is an American diplomat who is the current United States Ambassador to the Marshall Islands.  She was nominated by President Barack Obama to be United States Ambassador to the Marshall Islands on November 5, 2015 was confirmed by the U.S. Senate on May 17, 2016.  Stewart also served as United States Ambassador to Belarus from August 14, 2006 to March 12, 2008 and as United States Ambassador to Laos from November 2010 to August 2013. Harry Keels Thomas Jr. (born June 3, 1956 in the Harlem section of New York City) is an American diplomat and current United States Ambassador to Zimbabwe.  He served as the United States Ambassador to the Philippines from 2010 to 2013.  A former United States Ambassador to Bangladesh (serving from 2003 to 2005) and Director General of the United States Foreign Service (serving from 2007 to 2009), Thomas was designated by US President Barack Obama on November 19, 2009 to replace Kristie Kenney as Ambassador to the Philippines—the first African American to serve at that post.  He was confirmed by the United States Senate on March 19, 2010 and presented his credentials to Philippine president Gloria Macapagal-Arroyo on April 27, 2010 He was then nominated and confirmed as the United States Ambassador to Zimbabwe on October 22, 2015.  He was sworn in on December 8, 2015.
Answer: January 22, 2009