Puzzle of the Week #002 - Hint II

When asked about her birthday, a young woman gives the following information:

"The day after tomorrow, I turn 22 , but I was still 19 on New Year's Day last year."

When is her birthday?

Hint 2:

The woman will turn 22 in two days, and her birthday, like all birthday, lasts but one day.

She also mentions her age last year. A year, on the other hand, is a much larger period of time to deal with.

In order for her statement to be true, her birhtday needs to fall on a particular day. Think about how the above two facts help to narrow the possibilities.

Next Hint : Hint III
Previous Hint : Hint I
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