TheSun at Rise and Set

Home

$physics,astronomy,education,software,applet,java,shareware,science,mathematics,computer science,sun,moon,earth,optics,AC circuit,chaos,fractal,sundial,TSP,neural network,java,applet,programming,quiz$
GeoAstro
Applets

Astronomy

$physics,education,software,applet,java,shareware,science,astronomy,mathematics,computer science,sun,moon,earth,optics,AC circuit,chaos,fractal,sundial,TSP,neural network,java,applet,programming,quiz$
Chaos Game

The Azimuth of the Sun at Rise and Set

Graphics and table

Enter the latitude in decimal degrees,
northern positive, southern negative,
and press return key,

enter the longitude in decimal degrees,
eastern positive, western negative,
and press return key.

You may use the keys "d", or "m" to increase the date or month,
or Shift key and "d", "m" to decrease the date, or month.
Click into the applet first !

Azimuth of the Sun
The azimuth is the angular distance measured along the horizon (compass angle, bearing).

The angle is measured clockwise (eastwards) from the North point:
N = 0°, E= 90°, S = 180°, W = 270°.

The azimuth angle at rise and set (Azo) depends on the current declination (delta) of the Sun and on the latitude (beta) of the observer:
cos (Azo) = sin delta / cos beta
At a mid northern latitude (beta=45° N):

for sommer solstice (delta = +23.5°) the azimuth angle of the rising Sun is
Azo = 56°
and for winter solstice (delta = -23.5°):
Azo = 124°

Use the Write... menu to get a table, which can be printed (by copy and paste).

More Applets and details on my home page:

Applet showing the annual variation of the azimut angle at a fixed hour of the day

Sun and Moon polar

Azimuth of the Sun and the Moon at rise or set

Some photos:

Sunset

Rising Sun

Web Links

National Geophysical Data Center: magnetic declination calculator
calculating the value for a specific location
for an area, calculating a table

Last change: 2010, Jul 17

	Enter the latitude in decimal degrees, northern positive, southern negative, and press return key, enter the longitude in decimal degrees, eastern positive, western negative, and press return key.
	You may use the keys "d", or "m" to increase the date or month, or Shift key and "d", "m" to decrease the date, or month. Click into the applet first !
	Azimuth of the Sun The azimuth is the angular distance measured along the horizon (compass angle, bearing). The angle is measured clockwise (eastwards) from the North point: N = 0°, E= 90°, S = 180°, W = 270°.
The azimuth angle at rise and set (Azo) depends on the current declination (delta) of the Sun and on the latitude (beta) of the observer: cos (Azo) = sin delta / cos beta At a mid northern latitude (beta=45° N): for sommer solstice (delta = +23.5°) the azimuth angle of the rising Sun is Azo = 56° and for winter solstice (delta = -23.5°): Azo = 124°
Use the Write... menu to get a table, which can be printed (by copy and paste).