freakent
commented
4 years ago As usual it would be useful to understand what you are trying to achieve, but adjusting longitude doesn’t seem like the right way to go. The way the underlying Suncalc library works is by angles to the sun. Each event output is at a set sun angle. for example, sunrise is at -0.833 radians and nightEnd at -18 radians. Nadir (the darkest moment) is calculated to be 0.5 radians from solarNoon. So the most reliable way to achieve this would be to figure out the correct angle In Radian, give this new event a name and emit it as a custom event. Take a look at Suncalc for more info.
Wordna1
I am trying to trigger a NodeRED flow 3 hours before Nadir which is currently at 00:47. I have successfully offset the longitude by 15 to offset the event an hour later, but I think offsetting in this way to a time before the midnight calculations (ie. 00:47 to 21:47) is causing issues.
It would be helpful if either my longitude workaround actually worked as expected or (better yet) if the node accepted an offset in minutes.