Daily Sun and Moon Paths
This page shows the paths of the sun and moon as a plot
of azimuth
vs. altitude over a day starting at local midnight.
This uses
Jean Meeus' simplified algorithm for the moon position.
estimates accuracy at 10° arc-seconds in longitude and 4°
arc-seconds in latitude.
All implementation mistakes are mine.
I get good results for an eclipse I observed on . I have been trying some of the ones I find on the List of solar eclipses in the 21st century I found have a problem with latitudes near the Earth's axial tilt. On solar eclipse for Dec 26, 2019, for example, the path plot starts to distort from to and lower.
Observer's Location
| Latitude | deg[:min[:sec]] | ||
|---|---|---|---|
| Longitude | deg[:min[:sec]] | ||
| Time Zone | hr[:mm] | ||
| Date | year-mm-dd | ||
| Local Time | hr[:min[:sec]] | ||
| DST | daylight saving time |
Time Controls
| Sun | Moon | |||
|---|---|---|---|---|
| Range | TBD | TBD | light-seconds | |
| Ecliptic | Longitude | TBD | TBD | deg:min:sec |
| Latitude | TBD | TBD | deg:min:sec | |
| Equatorial | Right Ascension | TBD | TBD | hr:min:sec |
| Declination | TBD | TBD | deg:min:sec | |
| Horizontal | Azimuth | TBD | TBD | deg:min:sec |
| Altitude | TBD | TBD | deg:min:sec | |
| Rising | TBD | TBD | ST | |
| Transit | TBD | TBD | ST | |
| Setting | TBD | TBD | ST |