/**
* Constructs a new <code>SunriseSunsetCalculator</code> with the given <code>Location</code>
*
* @param location
* <code>Location</code> object containing the Latitude/Longitude of the location to compute
* the sunrise/sunset for.
* @param timeZoneIdentifier
* String identifier for the timezone to compute the sunrise/sunset times in. In the form
* "America/New_York". Please see the zi directory under the JDK installation for supported
* time zones.
*/
public SunriseSunsetCalculator(Location location, String timeZoneIdentifier)
{
this.location = location;
this.calculator = new SolarEventCalculator(location, timeZoneIdentifier);
}
/**
* Constructs a new <code>SunriseSunsetCalculator</code> with the given <code>Location</code>
*
* @param location
* <code>Location</code> object containing the Latitude/Longitude of the location to compute
* the sunrise/sunset for.
* @param timeZone
* timezone to compute the sunrise/sunset times in.
*/
public SunriseSunsetCalculator(Location location, TimeZone timeZone)
{
this.location = location;
this.calculator = new SolarEventCalculator(location, timeZone);
}
/**
* Computes the sunset for an arbitrary declination.
*
* @param latitude
* @param longitude
* Coordinates for the location to compute the sunrise/sunset for.
* @param timeZone
* timezone to compute the sunrise/sunset times in.
* @param date
* <code>Calendar</code> object containing the date to compute the official sunset for.
* @param degrees
* Angle under the horizon for which to compute sunrise. For example, "civil sunset"
* corresponds to 6 degrees.
* @return the requested sunset time as a <code>Calendar</code> object.
*/
public static Calendar getSunset(double latitude, double longitude, TimeZone timeZone, Calendar date, double degrees)
{
SolarEventCalculator solarEventCalculator = new SolarEventCalculator(new Location(latitude, longitude), timeZone);
return(solarEventCalculator.computeSunsetCalendar(new Zenith(90 - degrees), date));
}
