How to get latitude and longitude of the site location
Open https://maps.google.com and find the location of the site with your pointer on the map and right click. This will bring up a menu with several options. Att the top of the menu highlighted in red there should be two numbers that are 7 digits long (e.g. 47.55980, 7.586737). Clicking those numbers will automatically copy the numbers to your clipboard to easily paste afterwards.
You can also find the latitude and longitude of the site by downloading and using the following mobile apps and recording the latitude and longitude while you are at the site: