Talk:Timeline/@comment-35156864-20180418211247

ALEXIEL LUCIFEN http://miraculousladybug.wikia.com/wiki/File:Adrien%27s_schedule_January_to_June.jpg

If you check Adrien's schedule, you'll notice that that on April section, marks a pair of rollerblades which most likely references Timebreaker, meaning that Alix's birthday takes place in April.