Added daytime property

server/src/openmeteo.mjs

@@ -136,10 +136,11 @@ export async function dailyWeather(lat, lon, start, end) {
     const clouds   = null // not available in daily
 
     return {
-      time,
       label:                  WMO[code] || 'Unknown',
       icon,
       code,
+      time,
+      daytime: !!data.daily.sunrise[i],
       temperature:            temp,
       temperature_max:        temp,
       temperature_min:        data.daily.temperature_2m_min[i],
@@ -183,7 +184,20 @@ export async function hourlyWeather(lat, lon, start, end) {
   const data = await cachedFetch(`hourly_${lat}_${lon}_${startStr}_${endStr}`, url)
   if (!data?.hourly?.time) return []
 
+  const sunMap = {}
+  if (data.daily?.time) {
+    data.daily.time.forEach((date, i) => {
+      sunMap[date] = { sunrise: data.daily.sunrise[i], sunset: data.daily.sunset[i] }
+    })
+  }
+
   return Promise.all(data.hourly.time.map(async (time, i) => {
+    const date = time.slice(0, 10)
+    const sun  = sunMap[date] ?? {}
+    const t    = new Date(time).getTime()
+    const daytime = sun.sunrise && sun.sunset
+        ? t >= new Date(sun.sunrise).getTime() && t < new Date(sun.sunset).getTime()
+        : false
     const code     = data.hourly.weathercode[i]
     const icon     = await ensureIcon(code).catch(() => null)
     const temp     = data.hourly.temperature_2m[i]
@@ -193,6 +207,7 @@ export async function hourlyWeather(lat, lon, start, end) {
 
     return {
       time:                   time.slice(0, 16),
+      daytime,
       label:                  WMO[code] || 'Unknown',
       icon,
       code,