Cumulus Support

Please see the attached picture.

Moon percentage not matching Moonphase.

The quarters are now two degrees of phase either side of the event. So -48 is last quarter.

Not sure when this changed but if you are using my script I am going to change it once I have confirmed what CumulsMX is doing with Mark.

Mine just changed to Waning Crescent ... Your image is way out of whack with the phase though.

Crossed posts!

I just want it right that's it. Either moonpercentage is sync with moonphase or vice versa.

Thanks.

Sorry to a pain.

They are in sync in your screen shot - it's just the image that is wrong.

Sorry Mark i have to disagree with you there. The image is in sync with moon percentage not moonphase.

Last quarter is only at 50%. 51+ or -49 isnt last quarter.

richard_newberry wrote: ↑Mon 16 Mar 2020 8:05 pm Sorry Mark i have to disagree with you there. The image is in sync with moon percentage not moonphase.

Last quarter is only at 50%. 51+ or -49 isnt last quarter.

https://en.m.wikipedia.org/wiki/Lunar_phase

From that link you will see 50% is only last quarter or first quarter.

We have discussed this before, if you want to be *really* picky, then each quarter is an instant in time and Cumulus should never display them.

A common convention is to mark the whole day in which the event occurs as the quarter/full/new. The +/- 1 percent only gave the phase for a few hours last full moon, so I have widened it to +/- 2 percent.

The Cumulus calculations are only approximations anyway, good enough to be within minutes - but it's a weather program not an astronomy program.