Loosing Long/Lat Settings

V10.0
When I set the long and lat the Sun Rise and Set times are correct and all is fine til I shut down WD. When I start it up again the sun rise/set times are wrong and when I look at long/lat they are zero. Do I need to do something special to save them other than clicking Update?

do you click on OK on that setup window?
when you say gone, how do you mean?
if they are still in the entry box, then it has remember the settings
to get the numbers back to where the — is, click on update
but thats not needed, but i guess i can make it do that auto

My mistake. I was clicking on Update thinking that was all I had to do. I saw the time setting note and thought that all below that was related to time and date so I had not clicked on OK. Sorry about that!