Thank you, Thank you, Thank you - it works!
I believe I started all out by using Sunrise_time, but I have tried so many different things I don’t remember any longer.
For anybody who would be in the same situation - here is my config.
Openhab 2.4
Astrow Binding Installed and configured.
rule "Tænd spot facade når det er mørkt"
when
Time cron "0 47 23 ? * MON-FRI *"
then
if (now.isAfter((Sunrise_Time.state as DateTimeType).getZonedDateTime.toInstant.toEpochMilli)){
Spot_Facade.sendCommand(ON)
Spot_Terrasse.sendCommand(ON)
}
end
Now I just have to find the best sunrise vs sunset and IsBefore or isAfter.