Question: Why
does the App sometimes show New Moon Day commencing when the illumination of the
moon is at 0.0%? Does 0.0% illumination
not indicate the time of Conjunction? If
it does, shouldn’t New Moon Day be the following day?
Answer: Because
the App only shows one decimal place for the illumination, it does not
necessarily indicate the precise moment of Conjunction. For example: When the moon’s illumination is
0.01%, it will still show as 0.0%. For
this reason, the App will display 0.0% illumination for a brief period both before
and after the precise moment of Conjunction.
The app uses USNO calculations for conjunction (astronomical new moon).
Related Content:
Comments