Sunrise/sunset time anomaly

Owners Bug Reports
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#1

Was glancing at my app and spotted the sunset/sunrise times and had to do a double take. My day is still > 12 hours (post solstice) and not quite consistent with the calculation for my location based on NOAAs calculator (https://www.esrl.noaa.gov/gmd/grad/solcalc/) which indicates sunrise at 7:02 and sunset at 7:00 - the screenshot attached is from my IOS app, but my website access shows the same thing so it isn’t platform driven.

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Not sure what else to make of this…will look tomorrow and for a couple days after

Forecast API/Software?
#2

it is showing yesterdays values. for sunrise/sunset. It shouldn’t but it does.

#3

This made me think that they could just add a circle to that and it moves depending on the time of day for that station.

#4

Thanks for the report @shaun.w.bell. We are investigating minor differences in the sunrise/sunset times. Different sources give slightly different results. Varying by 1-2 minutes.

#5

@corrineb - Is the WF logic adjusting for station height? If so, how much will it change the daily rise/set times???

#6

at the equator to get 1 minute difference in sunset/sunrise times, you have to rise 1.5km up from sealevel. At 50degree north you still need to rise 1km.
My station is about 1 m above sealevel and still shows yesterday’s values (no correction for height is needed). It does it today, and it did that when I first reported it (a long time ago)

#7

@vreihen Currently, the station’s height above ground is not factored in to the sunrise/sunset times.

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#8

I have also found in the rest API URL (https://swd.weatherflow.com/swd/rest/better_forecast?api_key=XXXXXXXXXXXXX&lat=XXXXX&lon=XXXXX) under

['forecast']['daily'][x]

Where x is the number
The sunset and sunrise times are for the wrong day? They don’t seem to match the day_num field and not sure the other values line up in that case.

#9

An update on this. We’ve discovered a bug in the caching mechanism seems to be intermittently causing the sunrise/sunset values to slip by a day. We are investigating…

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