Subsolar point

The subsolar point on a planet is where its sun is perceived to be directly overhead (in zenith); that is where the sun's rays are hitting the planet exactly perpendicular to its surface. It can also mean the point closest to the sun on an object in space, even though the sun might not be visible. The subsolar point is frequently used in celestial navigation and the coordinates of the subsolar point at various times throughout the year (often every hour) can be found in a nautical almanac. When the point passes through Hawaii, it is known as Lahaina Noon.

Subsolar point

The subsolar point on a planet is where its sun is perceived to be directly overhead (in zenith); that is where the sun's rays are hitting the planet exactly perpendicular to its surface. It can also mean the point closest to the sun on an object in space, even though the sun might not be visible. The subsolar point is frequently used in celestial navigation and the coordinates of the subsolar point at various times throughout the year (often every hour) can be found in a nautical almanac. When the point passes through Hawaii, it is known as Lahaina Noon.