Day-night

Day-night is a program that calculates:

• Relative location of two points on the Earth's surface with given coordinates (with the possibility of displaying the shortest path between these points on a map of the Earth);
• Position of the Sun and the Moon for a given point on the Earth at a given time; graph of the daily course of the Sun and the Moon in coordinates azimuth - altitude;
• Position of the boundaries of shadow and twilight with the display on the Earth map.

Added

• Editing the list of terrestrial coordinates;
• Calculation of insolation for a given point;
• Improved accuracy of calculation of the Moon coordinates.