Celestial Illumination

App shows illumination data based on location (detected by device or entered by user) and time. The illumination data is available for a single date or for a range of dates.

Data shown:

* Begin Morning Astronomical Twilight (BMAT),

* End Morning Astronomical Twilight (EMAT) / Begin Morning Nautical Twilight (BMNT),

* End Morning Nautical Twilight (EMNT) / Begin Morning Civil Twilight (BMCT),

* End Morning Civil Twilight (EMCT) / Sunrise,

* Midday,

* Begin Evening Civil Twilight (BECT) / Sunset,

* End Evening Civil Twilight (EECT) / Begin Evening Nautical Twilight (BENT),

* End Evening Nautical Twilight (EENT) / Begin Evening Astronomical Twilight (BEAT),

* End Evening Astronomical Twilight (EEAT),

* moon rise,

* moon set, and

* percent lunar illumination.

Data is calculated so app can work in off-line mode.

Features:

* Location in decimal degrees or degrees/minutes/seconds.

* Location can be detected by device, coordinates can be entered manually, or selected on a map.

* Location can be saved and loaded later.

* Times are displayed in local or UTC time.

* Internet connectivity not required (except for Google Maps).