Altitude and Azimuth of the Sun and the Moon

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Altitude and Azimuth of the Sun and the Moon

Web: http://www.geoastro.de/altazsunmoon/

Location:
Select a location from the menu list,
or enter latitude and longitude manually.
Don't forget to adjust the time zone.

Look up your coordinates:
by set location (Heavens-Above): 2 million towns and villages world-wide.
Click the applet area first !
Enter latitude (decimal degrees, northern positive, southern negative) into the text field of the applet,

enter longitude (decimal degrees, eastern positive, western negative) into the text field of the applet,

and press Apply input.

Time Zone
Find the time zone (and coordinates) of cities worldwide: The World Clock

Interactive time zone map of countries around the world.

Key commands:

You may use the keys "m", "d", "h", "n" to increase the month, date, hour, or minute,
or Shift key and "m", "d", "h", "n" to decrease the month, date, hour, or minute !
Click the applet first !

Details menu

Write Day:

Solar and lunar data are computed for one day.

The longitude of the Sun is computed to an accuracy of 0.01°, assuming a purely elliptical motion of the Earth, and neglecting the perturbations by the Moon and the planets.
The resulting accuracy of right ascension is about 0.01°, and of declination is about 0.004°.

To get this data window select "Write Day" from the menu:

The elevation angles of the Moon are corrected for parallax and atmospheric refraction, which is bending the light while passing through the Earth's atmosphere.
Applet: Atmospheric Refraction

How to compute the position of the Sun
(Basics of positional astronomy)

How to compute the position of the Moon

"Instrument Buch" of Petrus Apianus, 1533
from Bruno H. Bürgel: Aus fernen Welten, 1920

Last Modified: 2023, Oct 05

Location:	Select a location from the menu list, or enter latitude and longitude manually. Don't forget to adjust the time zone.
	Look up your coordinates: by set location (Heavens-Above): 2 million towns and villages world-wide. Click the applet area first ! Enter latitude (decimal degrees, northern positive, southern negative) into the text field of the applet, enter longitude (decimal degrees, eastern positive, western negative) into the text field of the applet, and press Apply input.
Time Zone	Find the time zone (and coordinates) of cities worldwide: The World Clock Interactive time zone map of countries around the world.
Key commands:	You may use the keys "m", "d", "h", "n" to increase the month, date, hour, or minute, or Shift key and "m", "d", "h", "n" to decrease the month, date, hour, or minute ! Click the applet first !
Details menu	Write Day: Solar and lunar data are computed for one day.