All of us knows our birthday in accordance to the Gregorian calendar but not everyone (myself included) knows our birthday in the year Hijrah. I only know of Ryan's birthday according to Hijrah calendar and that is only because I was praying for him to be born on Muharram but he came 3 days too late. Anyway found this app and thought I should document this in my blog for easy reference in the future :) More post coming soon...