This watch face displays a 24 h analog clock with hours (0-24, short hand) and minutes (0-60, long hand). Additionally solar noon (yellow hand) and sunrise to sunset duration (blue semi circle) is shown as well. Civic twilight times are indicated in dark blue and nautical twilight times in purple.</p><p></p><p>Last GPS location is used to calculate the sun data based on the equations from the Astronomical Algorithms, by Jean Meeus (verified against https://www.esrl.noaa.gov/gmd/grad/solcalc/calcdetails.html). If no GPS data is available, Lat/Lon = 0/0 at UTC is used, so make sure to acquire a GPS position for your location. This feature does not work on Fenix 5X watches, were the coordinates can be set manually.</p>
ver. 2.0.0: Pro features and donation system removed. I make the app freely available as donations so far cover less than 2% of the development costs. Many thanks to everybody who has donated, you made this watch face possible in the first place.</p><p></p><p>ver. 1.8.0: Now you can select the time zone offsets from a list of time zones, no float entry anymore. More bug fixes.</p><p></p><p>ver 1.7.0: The default option now exists to manually enter the required data for the sun calculation (Lat, Lon, Timezone). It is also possible for the user to activate getting the location from the GPS. Almost all users should be able to do so. Currently Fenix 5X users have to manually enter their location, the automatic retrieval does not work on Fenix 5X watches.