It probably more than likely that when I ran rebuild daily after extending
my schema for v4 that the vm I did that on was utc and running off old
archive data that was in PDT.

Given the UTC-8 here, if the high was after 4pm local (not unusual)
wouldn't that be a day offset?  Or would it be the other day off ? Darn
timezones...

On Sun, Apr 5, 2020, 3:46 PM Vince Skahan <[email protected]> wrote:

> Actually looks possible.
>
> https://www.almanac.com/weather/history/WA/Seattle/2007-04-07
>
> Pre jan 2009 I had a LaCrosse that tended to read a few degrees hot in the
> sun, so yes I could see that date being 75+ here.
>
>
> On Sun, Apr 5, 2020, 3:40 PM Thomas Keffer <[email protected]> wrote:
>
>> OK, there's the problem. For whatever reason, the column `maxtime` in the
>> daily summaries for 5-Apr-2007 has the high temperature for the next day,
>> 6-Apr-2007.
>>
>> This pattern seems to occur sporadically for many other years.
>>
>> Do you suppose that your computer was running UTC when the daily
>> summaries were rebuilt?
>>
>> Was your weather station vacationing in Miami in 2007? A high of 79 for
>> April has got to be very unusual for Seattle! :-)
>>
>> -tk
>>
>>
>> -tk
>>
>> On Sun, Apr 5, 2020 at 3:23 PM Vince Skahan <[email protected]>
>> wrote:
>>
>>> On Sunday, April 5, 2020 at 3:20:17 PM UTC-7, Tom Keffer wrote:
>>>>
>>>> OK, that matches what the historical extension is giving.
>>>>
>>>> A few more selects to try
>>>>
>>>>
>>>>
>>> root@debian:/home/weewx/archive# sqlite3 weewx.sdb
>>> SQLite version 3.7.13 2012-06-11 02:05:22
>>> Enter ".help" for instructions
>>> Enter SQL statements terminated with a ";"
>>> sqlite> select date(dateTime,'unixepoch','localtime'),
>>> datetime(`maxtime`,'unixepoch','localtime'),`max` from archive_day_outTemp
>>> where strftime("%m-%d", dateTime,'unixepoch','localtime')='04-05';
>>> 2007-04-05|2007-04-06 16:34:00|79.0
>>> 2008-04-05|2008-04-06 11:29:00|51.3
>>> 2009-04-05|2009-04-06 17:00:00|71.199997
>>> 2010-04-05|2010-04-06 14:05:00|52.400002
>>> 2011-04-05|2011-04-05 17:50:00|47.7
>>> 2012-04-05|2012-04-06 16:20:00|55.0
>>> 2013-04-05|2013-04-05 17:05:00|53.7
>>> 2014-04-05|2014-04-06 16:45:00|58.4
>>> 2015-04-05|2015-04-06 16:50:00|57.6
>>> 2016-04-05|2016-04-06 16:10:00|65.9
>>> 2017-04-05|2017-04-06 16:25:00|59.6
>>> 2018-04-05|2018-04-06 16:25:00|68.3
>>> 2019-04-05|2019-04-06 16:15:00|55.5
>>> 2020-04-05|2020-04-05 12:22:41|56.6
>>> sqlite> select datetime(dateTime,'unixepoch','localtime'),outTemp from
>>> archive where dateTime >1175756400 and dateTime<=1175842800 order by
>>> outTemp desc limit 1;
>>> 2007-04-05 17:14:00|72.5
>>> sqlite> select datetime(dateTime,'unixepoch','localtime'),outTemp from
>>> archive where dateTime >1175842800 and dateTime<=1175929200 order by
>>> outTemp desc limit 1;
>>> 2007-04-06 16:34:00|79.0
>>> sqlite>
>>>
>>>
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>>

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