Earth's Tilt

// Assumes daylight hours are always the same
function scheduleOutdoorEvent(date) {
  const eventStart = new Date(date);
  eventStart.setHours(18, 0, 0); // 6 PM
  
  // This assumes it's always light at 6 PM
  // Fails in winter at high latitudes (already dark)
  // Fails in summer at high latitudes (still bright at 10 PM)
  return eventStart;
}

// Assumes sunrise is always around 6 AM
function morningAlarm() {
  return "06:00"; // Breaks in polar regions and varies by season
}

// Ignores seasonal daylight variation
function calculateSolarPanelOutput(date) {
  const hoursOfSunlight = 12; // Wrong! Varies by season and latitude
  return hoursOfSunlight * panelWattage;
}

// Account for seasonal daylight variation
import { getSunrise, getSunset } from 'suncalc';

function scheduleOutdoorEvent(date, latitude, longitude) {
  const sunset = getSunset(date, latitude, longitude);
  
  // Schedule event 1 hour before sunset, accounting for season
  const eventStart = new Date(sunset.getTime() - (60 * 60 * 1000));
  
  // Ensure minimum time (handle polar night)
  const minimumTime = new Date(date);
  minimumTime.setHours(17, 0, 0);
  
  return eventStart > minimumTime ? eventStart : minimumTime;
}

// Calculate actual sunrise for location and date
function adaptiveAlarm(date, latitude, longitude) {
  const sunrise = getSunrise(date, latitude, longitude);
  
  // Handle polar regions where sunrise might not exist
  if (!sunrise || isNaN(sunrise.getTime())) {
    return "07:00"; // Fallback for polar night
  }
  
  // Wake up 30 minutes before sunrise
  const alarmTime = new Date(sunrise.getTime() - (30 * 60 * 1000));
  return alarmTime.toTimeString().slice(0, 5);
}

// Account for seasonal variation in solar output
function calculateSolarPanelOutput(date, latitude, longitude) {
  const sunrise = getSunrise(date, latitude, longitude);
  const sunset = getSunset(date, latitude, longitude);
  
  if (!sunrise || !sunset) {
    // Handle polar day/night
    return latitude > 66.5 ? (isWinter(date) ? 0 : 24 * panelWattage) : 12 * panelWattage;
  }
  
  const daylightHours = (sunset - sunrise) / (1000 * 60 * 60);
  return daylightHours * panelWattage * seasonalEfficiency(date, latitude);
}