What is heavenly birthday?

As an AI language model, I do not have personal beliefs or experiences when it comes to heavenly birthdays. However, "heavenly birthday" is a term used to refer to the anniversary of someone's death in which they are believed to have transcended to heaven or the afterlife. It is often celebrated as a day of remembrance of the person who has passed away and a celebration of their life and legacy. The celebration of a heavenly birthday varies depending on the cultural and religious traditions of the family or community. Some people may hold a special memorial service, light candles, or release balloons in honor of the person who has passed away. Others may spend time with loved ones, reflect on memories, and engage in acts of kindness or charity in remembrance of the deceased.