Calculator for Sun Earth Angles
Very User friendly Program. This program can calculate all the solar earth angles by taking some input parameters.

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User has to give input parameter as 

1. n, i.e. number of days starting from January 1; 
2. phi, Latitude Angle; 
3. Solar Time; Gamma, 
4. Surface Azimuth Angle, 
5. Reflectivity of ground; 
6. Turbidity factor of surface.            

Output parameters include (19 parameters)

1. Declination Angle, 
2. Hour Angle, 
3. Zenith Angle, 
4. Solar Azimuth Angle, 
5. Iext (Extra Terrestrial Radiation), 
6. In (Normal Irrad in Terrestrial region), 
7. Incident Angle, 
8. Flux of Beam Radiation on horizontal surface(Ihb), 
9. Flux of Diffuse radiation on horizontal surface(Id), 
10. Flux of Beam Radiation on inclined surface (Ib'), 
11. Amount of diffuse radiation available on inclined surface (Id'), 
12. Reflected component of Total solar radiation on inclined surface (IR'), 
13. Total solar radiation falling on inclined surface of absorber plate at solar noon (Ii), 
14. Ratio of apparent width of the horizontal absorber plate intercepted by sunrays to apparent width of the inclined absorber plate intercepted by sunrays (Wh / Wi), 
15. Ratio of total radiation flux on inclined surface to global radiation flux on horizontal surface (Ii / Igh), 
16. Ratio of intensity of beam radiation on horizontal surface to beam radiation flux on normal surface (Ihb / In), 
17. Ratio of beam radiation flux on inclined surface to beam radiation flux on normal surface (Ib' / In), 
18. Optimum angle of the reflector mirror with vertical for horizontally placed cooker (λ), 
19. Optimum angle of the reflector mirror with horizontal for optimally inclined cooker (ψ).