Likewise on the first part. Just now my pyephem enabled page shows 41%, a non-pyephem enabled VM shows 34%, timeanddate.com shows 40.5%, best I could get from USNO is 41% but I am not sure as of what time that is, it is just shown as a 'day' figure. Pyephem gives me 40.5641403198% but that is using:
>>> import ephem >>> moon = ephem.Moon() >>> moon.compute() >>> print moon.phase 40.5641403198 Your pyephem code gives me >>> import ephem >>> print(ephem.Moon(datetime.date.today()).moon_phase) 0.408785965463 >>> datetime.date.today() datetime.date(2018, 9, 16) but I suspect the variance there is because datetime.date.today() returns a date with no time so I suspect that will mean pyephem returns the moon phase at midnight today whereas ephem.Moon() will cause the current time to be used instead. Might need to look into the non-pyephem page 34% value but all the others seem completely consistent to me. Gary On Sunday, 16 September 2018 09:26:30 UTC+10, Thomas Keffer wrote: > > Can't help you with the first of your two questions. > > Regarding the second, when I look at my own skin > <http://www.threefools.org/weewx/>, it shows 41% for today. Are you sure > you're not looking at an old, perhaps cached, version? > > -tk > > On Sat, Sep 15, 2018 at 2:45 PM Philip Kutzenco <kutz...@gmail.com > <javascript:>> wrote: > >> I've noticed that some information from the DarkSky API as well as >> calculated moon phase don't seem to be correct or consistent with other >> sources of data on WeeWX. Here's what I have seen: >> >> *DarkSky API* - I display a minimal 8 day forecast on the Belchertown >> Skin. When I pull down the values using the SPI directly with my lat and >> long, the values pulled down match what the skin shows. However, If I go to >> DarkSky.net using the same location, the values (like min & max temp, >> weather icon, precip probability etc.) are usually very different. I'm >> pretty tuned into the weather right now as I live in Western North Carolina >> and will be impacted by the remains of Florence over the next several days. >> What's going on with the DarkSky API? >> >> *Moon phase* - WeeWX shows the moon phase for today to be a waxing >> crescent - 24% (I think that means 24% visible or illuminated). When I do >> the calculation using python's ephem module - >> *print(ephem.Moon(datetime.date.today()).moon_phase)* - the answer I get >> for moon phase is 31.19%. I thought that WeeWX used ephem for that >> calculation. On timeanddate.com today's moon phase is 39.5%. At >> http://aa.usno.navy.mil, 37% of the moon is illuminated today. Why such >> a variation? >> >> These two items are vexing me. Can someone help explain these anomalies? >> >> Phil >> >> -- >> You received this message because you are subscribed to the Google Groups >> "weewx-user" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to weewx-user+...@googlegroups.com <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
