This app includes two different faces for your watch: analog and digital.

They both show the current value of the equation of time together with current time according to different time systems:
- mean time
- time zone true time
- local true time (*)
- local mean time (*)
- babilonic time (*)
- italic time (*)
- temporal time (*)
- to sunset time (*)

Time systems marked with (*) are only available if a smartphone with a GPS receiver is coupled with the watch.
In this case the app can also compute the instants of sunrise and sunset.
These times are shown in the analog face by means of two small dials.

The digital face shows the whole day in a 24 hours dial where civil, nautical and astronomical twilight instants are marked.

More information are available in the author's web site www.sundials.eu/download/GnomoWatchENU.html