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Personal
Illinois State Senator and U.S. Senator from Illinois 44th President of the United States
Tenure
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The following is a timeline of Barack Obama's presidency from his inauguration as the 44th president of the United States on January 20, 2009, to December 31, 2009. For his time as president-elect, see the presidential transition of Barack Obama; for a detailed account of his first months in office, see first 100 days of the Barack Obama presidency; for a complete itinerary of his travels, see list of presidential trips made by Barack Obama.
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