Astro binding channels confusion

Setup, Configuration and Use Beginners
1

Hi,

I have to admit that I find the astro binding confusing. In the attached part

I assume that the first two will give just a time that I may compare against the current time (for instance) and the third is a time difference. But what is a RangeEvent? How may it be used?

Fredrik

2

It’s used for triggering rules:

http://docs.openhab.org/addons/bindings/astro/readme.html

rule "example trigger rule"
when
    Channel 'astro:sun:home:rise#event' triggered START 
then
    ...
end