April 15th has not always been the filing deadline. March 1st was the date specified by Congress in 1913, after the passage of the 16th amendment. In 1918 Congress pushed the date forward to March 15th, where it remained until the tax overhaul of 1954, when the date was again moved ahead to April 15th. For further information on the choice of April 15th as the filing date see Yahoo! and Fortune "Great questions of our age: Why is tax day April 15?" by Jessica Sung. Fortune, Apr 15, 2002. (Volume 145, Issue 8; page. 64,).
April 15th - unless that day is a holiday in your state.
April 15th. Though extensions may be filed.
Congress changed the day income taxes are due from March 15 to April 15 in 1955.
This question is unclear. Are you asking what day U.S. federal taxes were due in 2010? If so, they were due on April 15th. They're due on April 15th every year unless it falls on a weekend or Emancipation Day.
15th of April 1912 was a Monday.
April 15th 2010 was a Thursday.
15th April 1985 was a Monday.
April 15th, 1913 was a Thursday.
April 15th is the last day every year that you can send in your federal income without a penalty. Some post offices are even open until midnight, and as long as your federal return is postmarked April 15th, 23:59 you're good to go.
April 15th, 2001 fell on a Sunday.
April 15th, 1947 fell on a Tuesday.
Individual income tax returns must by postmarked by April 15. If April 15 is a Saturday, Sunday, or holiday, then the next day that is not a Saturday, Sunday, or holiday.