show more days of forecast, enable reload of forecasts

lib/models/daily_weather_model.dart

@@ -4,6 +4,10 @@ import 'dart:math';
 class DailyWeatherModel {
   late List<HourlyWeatherModel> hourlyForecasts;
 
+  DateTime dateOfDay() {
+    return hourlyForecasts[0].timestamp.toLocal();
+  }
+
   DailyWeatherModel.fromJson(Map<String, dynamic> json) {
     List dataPoints = json['weather'];
     hourlyForecasts = [];