You can't. Each year must be filed seperately so you have to file 2 returns. Also, you wouldn't want to because you would lose out...only getting one deduction where 2 are allowed and paying at a tax...
The day to file individual federal income tax returns (Form 1040/1040A/1040EZ) is April 15 unless April 15 is a weekend or holiday. If it is a weekend or holiday, it is the next day that is not a...