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Angle of the sun
- Thread starter pistons
- Start date
Altitude and Azimuth of the Sun on Feb 3, 2008
For TOLEDO, OHIO (W83° 34', N41° 40')
<table border=1><tr><td>Time</TD><TD> Altitude</TD><TD> Azimuth </TD></TR><TR><TD>07:00</TD><TD><center>-8.8°</center></TD><TD>104.5° </TD></TR><TR><TD>08:00</TD><TD><center> 2.1°</center></TD><TD>114.2° </TD></TR><TR><TD>09:00</TD><TD><center>11.6°</center></TD><TD>124.9° </TD></TR><TR><TD>10:00</TD><TD><center>20.1°</center></TD><TD>136.9° </TD></TR><TR><TD>11:00</TD><TD><center>26.7°</center></TD><TD>150.9° </TD></TR><TR><TD>12:00</TD><TD><center>30.7°</center></TD><TD>166.6° </TD></TR><TR><TD>13:00</TD><TD><center>31.7°</center></TD><TD>183.4° </TD></TR><TR><TD>14:00</TD><TD><center>29.5°</center></TD><TD>199.9° </TD></TR><TR><TD>15:00</TD><TD><center>24.3°</center></TD><TD>214.9° </TD></TR><TR><TD>16:00</TD><TD><center>16.9°</center></TD><TD>228.1° </TD></TR><TR><TD>17:00</TD><TD><center>8.0°</center></TD><TD>239.6° </TD></TR><TR><TD>18:00</TD><TD><center>-2.3°</center></TD><TD>249.8°</td></tr></table>
Altitude is the angle up from the horizon.
Zero degrees altitude means exactly on your local horizon, and 90 degrees is "straight up". Hence, "directly underfoot" is -90 degrees altitude.
Azimuth is the angle along the horizon, with zero degrees corresponding to North, and increasing in a clockwise fashion. Thus, 90 degrees is East, 180 degrees is South, and 270 degrees is West.
Using these two angles, one can describe the apparent position of an object (such as the Sun at a given time).
The altitude and azimuth values are for the center of the apparent disk of the Sun or Moon. The altitude values include the effect of standard atmospheric refraction when the object is above the horizon. The azimuth values are computed with respect to true north (not magnetic).
See The U.S. Naval Observatory's Sun or Moon Altitude/Azimuth Table Computation
For TOLEDO, OHIO (W83° 34', N41° 40')
<table border=1><tr><td>Time</TD><TD> Altitude</TD><TD> Azimuth </TD></TR><TR><TD>07:00</TD><TD><center>-8.8°</center></TD><TD>104.5° </TD></TR><TR><TD>08:00</TD><TD><center> 2.1°</center></TD><TD>114.2° </TD></TR><TR><TD>09:00</TD><TD><center>11.6°</center></TD><TD>124.9° </TD></TR><TR><TD>10:00</TD><TD><center>20.1°</center></TD><TD>136.9° </TD></TR><TR><TD>11:00</TD><TD><center>26.7°</center></TD><TD>150.9° </TD></TR><TR><TD>12:00</TD><TD><center>30.7°</center></TD><TD>166.6° </TD></TR><TR><TD>13:00</TD><TD><center>31.7°</center></TD><TD>183.4° </TD></TR><TR><TD>14:00</TD><TD><center>29.5°</center></TD><TD>199.9° </TD></TR><TR><TD>15:00</TD><TD><center>24.3°</center></TD><TD>214.9° </TD></TR><TR><TD>16:00</TD><TD><center>16.9°</center></TD><TD>228.1° </TD></TR><TR><TD>17:00</TD><TD><center>8.0°</center></TD><TD>239.6° </TD></TR><TR><TD>18:00</TD><TD><center>-2.3°</center></TD><TD>249.8°</td></tr></table>
Altitude is the angle up from the horizon.
Zero degrees altitude means exactly on your local horizon, and 90 degrees is "straight up". Hence, "directly underfoot" is -90 degrees altitude.
Azimuth is the angle along the horizon, with zero degrees corresponding to North, and increasing in a clockwise fashion. Thus, 90 degrees is East, 180 degrees is South, and 270 degrees is West.
Using these two angles, one can describe the apparent position of an object (such as the Sun at a given time).
The altitude and azimuth values are for the center of the apparent disk of the Sun or Moon. The altitude values include the effect of standard atmospheric refraction when the object is above the horizon. The azimuth values are computed with respect to true north (not magnetic).
See The U.S. Naval Observatory's Sun or Moon Altitude/Azimuth Table Computation
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Thanks frnash.
-John
-John