Definition: The word "2011101901" refers to a specific date and time in 2011, January 9, 2019. Detailed definitions: - Year: A common year has three months in it (April, June, September, November). - Month: Months are numbered from one through twelve. - Day: An integer number of days between two consecutive months. Here's an example: January 9, 2019 This shows a January day in 2019.