[weewx-user] Re: Daily rain total and daylight saving time error.

[gjr80]

If I understand correctly, clocks in Boston went forward one hour at 2am on 
10 March. WeeWX should have handled this correctly; the net result being 
your database will have no data from 2am to 3am 10 March. This is expected 
behaviour and should not be the cause of any lost data. This is all 
predicated on the Vantage console clock and daylight saving settings being 
correctly set and the console changing time as/when it should. If the 
console behaved correctly I have no idea what the problem could be; you may 
find some clues by looking at the log from say 1am to 4am on 10 March (ie 
what records were added to archive) or you may find some clues by looking 
through the archive table in the database, but these are long shots. Tom or 
others may have more ideas.

WeeWX does have a known issue when daylight saving ceases in that one hour 
of data is lost when the clock is wound back by one hour. But I do not 
recall any issues such as this when daylight saving starts.

I'm guessing you are using the weewx-realtime-gauge_data extension 
 to drive your 
SteelSeries weather gauges? If so, the reason you did not notice any error 
is that the weewx-realtime-gauge_data extension keeps its own running daily 
(midnight reset) rain total based on incoming loop packets. So it is 
impervious to (well non-midnight/non-1am) daylight saving changes. If you 
are using a template based gauge-data.txt it will suffer from the same 
issues as any other WeeWX generated web page as it uses the same 
$day.rain.sum tag.

Gary

On Monday 11 March 2024 at 03:00:32 UTC+10 russe...@comcast.net wrote:

> Hi, daylight saving time happened last night and my rain total 
> ($day.rain.sum) for the day does not equal that on the Davis Vantage Pro2. 
> The console reads 0.73" and weewx puts out 0.52". Interestingly, my Steel 
> Gauges indicate the correct 0.73". I think an hour of rain was dropped. 
>
> weewx version 5.02
>

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[weewx-user] Re: Daily rain total and daylight saving time error.

[Russell Swan]

Massachusetts, USA

On Sunday, March 10, 2024 at 2:16:27 PM UTC-4 michael.k...@gmx.at wrote:

>
> Just curious: where are you from that DST changed today?
> vince schrieb am Sonntag, 10. März 2024 um 18:10:30 UTC+1:
>
>> I've learned many years ago to just ignore any days when daylight savings 
>> changes either way
>>
>> On Sunday, March 10, 2024 at 10:00:32 AM UTC-7 Russell Swan wrote:
>>
>>> Hi, daylight saving time happened last night and my rain total 
>>> ($day.rain.sum) for the day does not equal that on the Davis Vantage Pro2. 
>>> The console reads 0.73" and weewx puts out 0.52". Interestingly, my Steel 
>>> Gauges indicate the correct 0.73". I think an hour of rain was dropped. 
>>>
>>> weewx version 5.02
>>>
>>

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[weewx-user] Re: Daily rain total and daylight saving time error.

['michael.k...@gmx.at' via weewx-user]

Just curious: where are you from that DST changed today?
vince schrieb am Sonntag, 10. März 2024 um 18:10:30 UTC+1:

> I've learned many years ago to just ignore any days when daylight savings 
> changes either way
>
> On Sunday, March 10, 2024 at 10:00:32 AM UTC-7 Russell Swan wrote:
>
>> Hi, daylight saving time happened last night and my rain total 
>> ($day.rain.sum) for the day does not equal that on the Davis Vantage Pro2. 
>> The console reads 0.73" and weewx puts out 0.52". Interestingly, my Steel 
>> Gauges indicate the correct 0.73". I think an hour of rain was dropped. 
>>
>> weewx version 5.02
>>
>

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[weewx-user] Re: Daily rain total and daylight saving time error.

[vince]

I've learned many years ago to just ignore any days when daylight savings 
changes either way

On Sunday, March 10, 2024 at 10:00:32 AM UTC-7 Russell Swan wrote:

> Hi, daylight saving time happened last night and my rain total 
> ($day.rain.sum) for the day does not equal that on the Davis Vantage Pro2. 
> The console reads 0.73" and weewx puts out 0.52". Interestingly, my Steel 
> Gauges indicate the correct 0.73". I think an hour of rain was dropped. 
>
> weewx version 5.02
>

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