eveningNauticalTwilight property

Twilight eveningNauticalTwilight

The evening nautical twilight.

The nautical twilight is when the centre of the Sun is between 6° and 12° below the sensible horizon. The sea horizon is no longer visible and it can be considered to be dark for normal practical purposes.

Implementation

Twilight get eveningNauticalTwilight => _eveningNauticalTwilight ??= Twilight(
      SunriseSunsetCalculator(instant, latitude, longitude,
              sunZenithDistance: 96.0)
          .calculateSunset(),
      SunriseSunsetCalculator(instant, latitude, longitude,
              sunZenithDistance: 102.0)
          .calculateSunset(),
    );