solar_calculator 1.0.1
solar_calculator: ^1.0.1 copied to clipboard
Calculates the position of the Sun, the sunrise, sunset, solar noon times and the different twilights periods for a given moment in time and position on Earth.
example/solar_calculator_example.dart
import 'package:solar_calculator/solar_calculator.dart';
void main() {
var latitude = 41.29708;
var longitude = 2.07846;
var date = DateTime.now();
var calc = SolarCalculator(date, latitude, longitude);
print('Sun Equatorial position:');
print(
' Right ascension: ${calc.sunEquatorialPosition.rightAscension} = ${calc.sunEquatorialPosition.rightAscension.decimalDegrees}');
print(' Declination: ${calc.sunEquatorialPosition.declination}');
print('Sun Horizontal position:');
print(' Azimuth: ${calc.sunHorizontalPosition.azimuth}');
print(' Elevation: ${calc.sunHorizontalPosition.elevation}');
print('Morning astronomical twilight:');
print(' Begining: ${calc.morningAstronomicalTwilight.begining}');
print(' Ending: ${calc.morningAstronomicalTwilight.ending}');
print(' Duration: ${calc.morningAstronomicalTwilight.duration}');
print('Morning nautical twilight:');
print(' Begining: ${calc.morningNauticalTwilight.begining}');
print(' Ending: ${calc.morningNauticalTwilight.ending}');
print(' Duration: ${calc.morningNauticalTwilight.duration}');
print('Morning civil twilight:');
print(' Begining: ${calc.morningCivilTwilight.begining}');
print(' Ending: ${calc.morningCivilTwilight.ending}');
print(' Duration: ${calc.morningCivilTwilight.duration}');
print('Sunrise: ${calc.sunriseTime}');
print('Noon: ${calc.sunTransitTime}');
print('Sunset: ${calc.sunsetTime}');
print('Evening civil twilight:');
print(' Begining: ${calc.eveningCivilTwilight.begining}');
print(' Ending: ${calc.eveningCivilTwilight.ending}');
print(' Duration: ${calc.eveningCivilTwilight.duration}');
print('Evening nautical twilight:');
print(' Begining: ${calc.eveningNauticalTwilight.begining}');
print(' Ending: ${calc.eveningNauticalTwilight.ending}');
print(' Duration: ${calc.eveningNauticalTwilight.duration}');
print('Evening astronomical twilight:');
print(' Begining: ${calc.eveningAstronomicalTwilight.begining}');
print(' Ending: ${calc.eveningAstronomicalTwilight.ending}');
print(' Duration: ${calc.eveningAstronomicalTwilight.duration}');
if (calc.isHoursOfDarkness) print('===> IS DARK <===');
}