Display time of sundown (or time until sundown)

Hi orux,

OruxMaps is the greatest app for hiking. It would be perfect if you could implement the display of:

- time of sundown

or

- time until sundown

This would be very helpful for hiking and reach the car before darkness comes. If you could implement this feature, I will sell my Garmin GPS and make another donation.

This feature has been implemented in the 3.3.x beta line. While I agree these are useful values, personally I found the values of civil dawn and civil dusk more convenient for these purposes (we actually often pitch tents even after civil dusk without flashlights). Because at the time of real sunset there's still plenty of light and by the time of civil dusk you don't need artificial light for most outdoor activities. So when planning any outdoor activities I take only the values of civil sunrise/sunrise into account.

But then our sailing & skygazing friends might ask for the addition of nautical and astronomical dawn/dusk as well ...