code: public String computeSunsetTime(Zenith solarZenith, Calendar date) {
          return getLocalTimeAsString(computeSolarEventTime(solarZenith, date, false));
      }
docs: Computes the sunset time for the given zenith at the given date.
  
  @param solarZenith
  <code>Zenith</code> enum corresponding to the type of sunset to compute.
  @param date
  <code>Calendar</code> object representing the date to compute the sunset for.
  @return the sunset time, in HH:MM format (24-hour clock), 00:00 if the sun does not set on the given
  date.