The Apparent Motion of the Sun at Different Times of the Year


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This applet was made together with Tey Meng Khoon and Frederick H. Willeboordse of CITA (Centre for Information Technology and Applications) for the course Heavenly Mathematics: Cultural Astronomy.

Video Clip

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This Java applet shows the motion of the Sun as seen from the Earth at different times of the year. It is similar to “The Apparent Motion of the Sun at Different Latitudes” applet, but here we have frozen certain specific times to make it easier to see what happens.

The equinoxes and solstices do not always fall on the 21st of the month. The exact times varies from year to year.

Helmer Aslaksen
Department of Mathematics
National University of Singapore