Thank you very much Tom. My knowledge doesn't go that far. I do it 
manually by adding the rainfall of the months since September, which is the 
beginning of the hydrological year. 

El sábado, 24 de abril de 2021 a las 22:36:03 UTC+2, [email protected] 
escribió:

> Geez, my apologies. I don't know what I was thinking.
>
> Unfortunately, no, it is not possible to sum from an arbitrary time. It's 
> a reasonable thing to do, but at the moment, weewx does not support it. You 
> would have to write a search list extension to do it.
>
> On Sat, Apr 24, 2021 at 1:05 PM Manuel <[email protected]> wrote:
>
>> Hi Tom I have put that in the index.html.tmpl and it gives me the 
>> following error:
>> Apr 24 21:51:13 raspberrypi weewx [9579]: cheetahgenerator: Generate 
>> failed with exception '<type' exceptions.TypeError '>' 
>> Apr 24 21:51:13 raspberrypi weewx [9579]: cheetahgenerator: **** Ignoring 
>> template /etc/weewx/skins/Standard/index.html.tmpl 
>> Apr 24 21:51:13 raspberrypi weewx [9579]: cheetahgenerator: **** Reason: 
>> current () got an unexpected keyword argument 'current_time' 
>> Apr 24 21:51:13 raspberrypi weewx [9579]: **** Traceback (most recent 
>> call last): 
>> Apr 24 21:51:13 raspberrypi weewx [9579]: **** File 
>> "/usr/share/weewx/weewx/cheetahgenerator.py", line 332, in generate 
>> Apr 24 21:51:13 raspberrypi weewx [9579]: **** fd.write (str 
>> (compiled_template)) 
>> Apr 24 21:51:13 raspberrypi weewx [9579]: **** File 
>> "/usr/lib/python2.7/dist-packages/Cheetah/Template.py", line 1005, in 
>> __str__ Apr 24 21:51:13 raspberrypi weewx [9579]: **** rc = getattr (self, 
>> mainMethName) () 
>> Apr 24 21:51:13 raspberrypi weewx [9579]: **** File 
>> "cheetah__etc_weewx_skins_Standard_index_html_tmpl_1619293873_73_36940.py", 
>> line 825, in respond 
>> Apr 24 21:51:13 raspberrypi weewx [9579]: **** File 
>> "cheetah__etc_weewx_skins_Standard_index_html_tmpl_1619293873_73_36940.py", 
>> line 98, in __errorCatcher5 
>> Apr 24 21:51:13 raspberrypi weewx [9579]: **** File "<string>", line 1, 
>> in <module>  
>> I don't know what I'm doing wrong.
>> Thanks for your quick response. 
>>
>> El sábado, 24 de abril de 2021 a las 19:04:41 UTC+2, [email protected] 
>> escribió:
>>
>>> If you know the unix epoch time, it's easy enough. For example, for all 
>>> the rain since 1-Jan-2021 0000 UTC:
>>>
>>> <p>Rain since the start of the year UTC: 
>>> $current(current_time=1609459200).rain.sum</p>
>>>
>>>
>>> On Sat, Apr 24, 2021 at 9:54 AM Manuel <[email protected]> wrote:
>>>
>>>>
>>>> Good afternoon. How can I get the accumulated rain from a date . 
>>>> Example from September until now. Thank you. 
>>>>
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>>>>
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>>
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