It will not, the third example might be different from the other two because of leap years. A leap year have 366 days, so if between date X and date X + 1year there is a leap day, date X + 365 will result in one day less than date X + 1year
Also, it's important to state that this question is not a really good one, as stated by José Carlos Santos in the comments of this answer, and you should improve it, as to make this comunity more organized, and a better place for people who enjoy math and want to learn more.
It will not, the third example might be different from the other two because of leap years. A leap year have 366 days, so if between date X and date X + 1year there is a leap day, date X + 365 will result in one day less than date X + 1year
Also, it's important to state that this question is not a really good one, as stated by José Carlos Santos in the comments of this answer, and you should improve it, as to make this comunity more organized, and a better place for people who enjoy math and want to learn more.