Sunset and Sunrise time.

[2220]

Hello

I'd like to write sunset and sunrise time functions knowing GPS coordinates.

I have no idea how to calculate.

Can anybody help me?

Regards.

 

[N1c0_ds]

Hello

I'd like to write sunset and sunrise time functions knowing GPS coordinates.

I have no idea how to calculate.

Can anybody help me?

Regards.

I found this article that shows the required calculations. You should be able to get useful information from this page:
How to calculate sunrise and set - a worked example at Sydney Observatory - news and views on astronomy from Sydney

 

[DaveW]

These might also help:

Calculate Sunrise/Sunset

or

Astronomy Answers: Position of the Sun

 

[2220]

Thank you very much Dave!

It seems very clear!

 

[alfcen]

GPS-Astro

Hello 2220,

Attached, please find a template of a program that retrieves
GPS longitude and latitude to calculate sunrise and sunset.
It also computes Sun Ephemerides and Moon Ephemerides (tap
on the image at the bottom right). The application employs
the latest GPSDriver.dll in that it will run on WM5 and WM6.x
devices only. Copy DS-DIGI.TTF to \Windows\Fonts.
There is plenty of room for enhancement and improvements
Cheers
Robert