The system for calculating the value of the angle d
With this system, you can calculate the value of d using the date and time when the lunar photograph was taken.
Click "Check the value to enter" and go to the link to the National Astronomical Observatory of Japan website,
and calculate the values of B0, L0, Bs, Ls, and Ps.
Enter these values in the following boxes, and press the "Calculate the value of d" button.