Board Thread:Questions and Answers/@comment-37685940-20181201210823/@comment-34879738-20181202065846

It has been confirmed that Rin and Haru were born in the same year since they are the same age as each other throughout the entire series. Rin was born on the 2nd of February while Haru was born on the 30th of June, meaning Rin is older than Haru by almost 5 months :)