func (clk *systemclock) Sunset(ref time.Time) time.Time {
if !clk.useCoordinates {
sunset := time.Date(ref.Year(), ref.Month(), ref.Day(), 18, 0, 0, 0, ref.Location())
if sunset.Sub(ref) < 0 {
sunset = sunset.AddDate(0, 0, 1)
}
return sunset
}
return astrotime.NextSunset(ref, clk.latitude, clk.longtitude)
}
func getTime(s string) (time.Time, error) {
midnight, _ := parseTimeToday("00:00")
switch s {
case "dawn":
return astrotime.NextDawn(midnight, latitude, longitude, astrotime.CIVIL_DAWN), nil
case "sunrise":
return astrotime.NextSunrise(midnight, latitude, longitude), nil
case "sunset":
return astrotime.NextSunset(midnight, latitude, longitude), nil
case "dusk":
return astrotime.NextDusk(midnight, latitude, longitude, astrotime.CIVIL_DUSK), nil
}
return parseTimeToday(s)
}