Sunangel

Motivation

Weather Apps and other Sources of information give bad results for the time of sunset. Especially in locations with many hills.

This project aims to provide a better prediction of the time, the sun actually crosses the horizon. In order to do so, we use elevation data to compute the horizon profile for a given location. Then we search for the time, the altitude of the sun is right at the horizon.

Installation

From source

git clone https://github.com/cloudsftp/Sunangel.git
cd Sunangel
git checkout master # make sure you are at the latest release, not on develop
./install.sh

Binary

Download binaries from the releases.

Usage

Use location to manage stored locations

Usage: location COMMAND [OPTIONS]

  COMMAND OPTIONS
  help                     Prints this information
  list                     Lists all stored locations
  add     NAME LAT LONG    Adds a location
  delete  NAME             Deletes a location

Use sunset to calculate the sunset for a given location

Usage: sunset (help | NAME | LAT LONG) [d=DAYOFFSET] [r=STARTRADIUS]

  Either NAME or LAT LONG is required as the first set of arguments
    If a NAME is entered, the program checks the database for stored locations
    If LAT and LONG are entered, the program uses these coordinates

  DAYOFFSET: Integer offset of the day relativeto today (tomorrow is d=1)
  STARTRADIUS: Integer radius to ignore when computing the horizon (one kilometer is r=1000)