morningCivilTwilight property

Twilight morningCivilTwilight

The morning civil twilight.

The civil twillight is when the centre of the Sun is between 0° 50' and 6° below the sensible horizon. Illumination is such that it is possible to carry out day time tasks without additional artificial lighting. Large terrestrial objects can be now distinguished. The sea horizon is clearly defined and the brightest stars and planets are still visible.

Implementation

Twilight get morningCivilTwilight => _morningCivilTwilight ??= Twilight(
      SunriseSunsetCalculator(instant, latitude, longitude,
              sunZenithDistance: 96.0)
          .calculateSunrise(),
      SunriseSunsetCalculator(instant, latitude, longitude)
          .calculateSunrise(),
    );