maths/php champ needed

stuartc1

Help with this would be great, Im looking to build a function that returns prayer times, I have the mathematical equation - but I did'nt stick in at maths at school and it makes no sense. Is it possible to convert this to PHP ??? any help at all would be great.
here is the equation:

(R-L)    T

Z = 12+ ----- + --- ........1
15 60

1        {sin(-0.8333-0.0347(H)^0.5)}-sinD.sinB

U= -- arccos -------------------------------------- ........2
15 cosD.cosB

1        -sinG-sinD.sinB

V= -- arccos --------------- ........3
15 cosD.cosB

1        sin{arccot(1+tan ABS(B-D))}-sinD.sinB

W= -- arccos ------------------------------------- ........4
15 cosD.cosB

1        sin{arccot((2+tan ABS(B-D)}-sinD.sinB

X= -- arccos ------------------------------------- ........5
15 cosD.cosB

where

B= latitude of place
L= longitude of place
R= reference longitude (i.e. TIME BAND x 15)
H= height above sea level in metres
D= declination angle of sun from celestial equator (-ve in southern hemisphere)
T= mean time - real time difference, i.e. equation of time
G= twilight angle
ABS = absolute value of

Fajr = Z-V
Sunrise = Z-U

Zuhr = Z
Asr1 (Shafi) = Z+W
Asr2 (Hanafi) = Z+X
Maghrib/Sunset = Z+U
Isha = Z+V

iantresman

Sorry, your equations don't make sense. For example, (R-L) T just describes some variables that are mentioned at the bottom of your page, but not what to do with them.

Additionally, even if you had the correct equations, would you know all the data that they require. For example, I live near London, but have no idea what its longitude, latitude, and height above sea level, let alone what the "twilight angle" is.

If it's any help, there's a Web site that already does something like this at:
http://www.islamicfinder.org

...and you can use it on your own site.