In my opinion default daytime icon would make a little more sense since one is looking at the data during daytime.
But I am not sure what I see for the hourly icons is correct: those are mostly night icons.
hourly icons timeseries 1, day icon at 13:00 and 14:00
2025-02-10 01:11:58.859 [INFO ] [openhab.event.ItemTimeSeriesEvent ] - Item 'OpenMeteoWeatherSystemWeatherForecastForecastHourlyIconId' shall process timeseries [
Entry[timestamp=2025-02-10T00:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T01:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T02:00:00Z, state=09n]
, Entry[timestamp=2025-02-10T03:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T04:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T05:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T06:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T07:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T08:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T09:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T10:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T11:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T12:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T13:00:00Z, state=01d]
, Entry[timestamp=2025-02-10T14:00:00Z, state=01d]
, Entry[timestamp=2025-02-10T15:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T16:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T17:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T18:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T19:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T20:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T21:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T22:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T23:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T00:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T01:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T02:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T03:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T04:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T05:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T06:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T07:00:00Z, state=10n]
, Entry[timestamp=2025-02-11T08:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T09:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T10:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T11:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T12:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T13:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T14:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T15:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T16:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T17:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T18:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T19:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T20:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T21:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T22:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T23:00:00Z, state=03n]]
hourly icons timeseries 2, no day icon
2025-02-10 18:12:03.418 [INFO ] [openhab.event.ItemTimeSeriesEvent ] - Item 'OpenMeteoWeatherSystemWeatherForecastForecastHourlyIconId' shall process timeseries [
Entry[timestamp=2025-02-10T17:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T18:00:00Z, state=02n]
, Entry[timestamp=2025-02-10T19:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T20:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T21:00:00Z, state=03n]
, Entry[timestamp=2025-02-10T22:00:00Z, state=02n]
, Entry[timestamp=2025-02-10T23:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T00:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T01:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T02:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T03:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T04:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T05:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T06:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T07:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T08:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T09:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T10:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T11:00:00Z, state=09n]
, Entry[timestamp=2025-02-11T12:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T13:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T14:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T15:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T16:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T17:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T18:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T19:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T20:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T21:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T22:00:00Z, state=03n]
, Entry[timestamp=2025-02-11T23:00:00Z, state=09n]
, Entry[timestamp=2025-02-12T00:00:00Z, state=03n]
, Entry[timestamp=2025-02-12T01:00:00Z, state=03n]
, Entry[timestamp=2025-02-12T02:00:00Z, state=03n]
, Entry[timestamp=2025-02-12T03:00:00Z, state=03n]
, Entry[timestamp=2025-02-12T04:00:00Z, state=03n]
, Entry[timestamp=2025-02-12T05:00:00Z, state=03n]
, Entry[timestamp=2025-02-12T06:00:00Z, state=09n]
, Entry[timestamp=2025-02-12T07:00:00Z, state=09n]
, Entry[timestamp=2025-02-12T08:00:00Z, state=09n]
, Entry[timestamp=2025-02-12T09:00:00Z, state=09n]
, Entry[timestamp=2025-02-12T10:00:00Z, state=03n]
, Entry[timestamp=2025-02-12T11:00:00Z, state=09n]
, Entry[timestamp=2025-02-12T12:00:00Z, state=09n]
, Entry[timestamp=2025-02-12T13:00:00Z, state=09n]
, Entry[timestamp=2025-02-12T14:00:00Z, state=09n]
, Entry[timestamp=2025-02-12T15:00:00Z, state=03n]
, Entry[timestamp=2025-02-12T16:00:00Z, state=09n]]
Persistence service is InMemory, Regional Settings are GMT+1 Europe/Berlin through MainUI.
It looks like it is using UTC instead of GMT+1. But then, still only showing two single day icons and all of the rest night icons seems strange …