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).