Current sub solar & sub lunar points

The sun is currently above

The moon is currently above

 

Not small-screen optimized, but you should be able to scroll sideways.

Outdated page

This page is 12+ years old – an eternity on the web. I will keep it for some time, as a fallback if the new page should have any technical issues. And for those of you who are reluctant to changes :)

The map

The sub solar point is the yellow marker. The blue one is the ”sub lunar” point. When you are at these locations, you will have the sun/soon directly over your head.

The green line is the equator. The upper orange line is the tropic of Cancer and the lower one is the tropic of Capricorn.

Both the sun and the moon always travel from right to left on the map. The sun needs 24 hours to move over the image, the moon takes another hour.

Above the map you can see the latitudes and longitudes. If above land you will also see the country and region the object flies over.

Trivia: The perimeter of the equator is roughly 40000 km, so the velocity of the yellow circle is 1700 km/h (1000 mi/h, 470 m/s).

The Refresh button is enabled ~2 minutes after the latest update, indicating newer data may be available. A pixel on the map is just under 2 minutes, so you wouldn’t see anything moving if you updated faster than that.

The sun

In the area between the tropics (orange lines) the sun can reach its zenith. This happens twice a year for every place—except for the tropics themselves since these are the turning points.

On the spring and autumn equinoxes the sun is directly overhead the equator.

The moon

The moon needs just a few weeks to go from one tropic to the other. A blue line shows its path. When it is close to the turning points the path is not drawn.

The turning points of the moon vary slowly, but are not very far from the tropics.

Calculations

I use the Pyephem library to find the heavenly bodies’ positions. Some Javascript is added to plot the positions on the world map. That’s all.