(A)  In General.  For many of the most common aggravated felonies, the sentence imposed is decisive.  These offenses constitute aggravated felonies if and only if a sentence of one year or more in custody is ordered by the court.  Therefore, for these offenses, the many defenses against a sentence imposed of one year or more constitute complete defenses to aggravated felony status.[282]

[282] See N. Tooby & J. Rollin, Aggravated Felonies § 3.63 (2006).

Ninth Circuit

AGGRAVATED FELONY " SENTENCE IMPOSED " ONE YEAR IS DEFINED AS 365 DAYS, REGARDLESS OF LEAP YEARS
Habibi v. Holder, 658 F.3d 977 (9th Cir. Sept. 14, 2011) (the phrase "one year" is defined as 365 days, regardless of leap years; noncitizen was deportable for aggravated felony, under INA 101(a)(43)(F), 8 U.S.C. 1101(a)(43)(F), even though his sentence was served during a leap year).