Birthday!

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year.
What day is my birthday?

Ans:
He was born on December 31st and spoke about it on January 1st.
The day before yesterday(December 30), he was 25 yrs old.
On the 31st, he turned 26.
On the 31st of December of current year, he will turn 27
And finally on the 31st December of next year, he will turn 28.