Interesting. My need is somewhat unrelated to Weewx. I need it on a microcontroller that isn't running a form of unix, but this gives me an idea to write a service on the box running weewx that outputs the DST status to the local network.
On Sun, Mar 28, 2021 at 2:52 PM Greg from Oz <[email protected]> wrote: > zdump -v /etc/localtime | grep 2021 > Can tell you the daylight saving times. > In my timezone it looks like this: > /etc/localtime Sat Apr 3 15:59:59 2021 UT = Sun Apr 4 02:59:59 2021 > AEDT isdst=1 gmtoff=39600 > /etc/localtime Sat Apr 3 16:00:00 2021 UT = Sun Apr 4 02:00:00 2021 > AEST isdst=0 gmtoff=36000 > /etc/localtime Sat Oct 2 15:59:59 2021 UT = Sun Oct 3 01:59:59 2021 > AEST isdst=0 gmtoff=36000 > /etc/localtime Sat Oct 2 16:00:00 2021 UT = Sun Oct 3 03:00:00 2021 > AEDT isdst=1 gmtoff=39600 > > > On Sunday, 28 March 2021 at 20:55:51 UTC+11 [email protected] wrote: > >> I hit that twice yearly daylight savings issue again today. and tried all >> my usual fixes. >> >> There is a thread >> <https://groups.google.com/g/weewx-user/c/AsuYQBdI1Ls/m/-YT6LIp8CwAJ> on >> this but it is getting long and unwieldy. >> >> But before porting to the Rasberry Pi, I never had an issue with the >> spring change, only autumn, but 2 years in a row now WeeWX has stopped at >> 02:00 am during spring change. >> >> Last year I managed to fix it by simply stopping and starting WeeWX, but >> this year that failed to work. >> >> Doing wee_device --dump just resulted this error, which looks like a data >> corruption >> ERROR weewx.drivers.vantage: LOOP try #1; error: Expected to read 99 >> chars; got 0 instead >> >> So I had to restore the database and run wee_device —clear-memory >> >> This fixes the problem but results in me losing data. >> >> What I want is to be able to detect the clock change some how and then >> create a cron job to stop WeeWX at clock change, run wee_device >> —clear-memory then re-start start it 61 minutes later, that will work for >> summer and winter changes. This will minimise data lose and stop me having >> to go through this every year. >> >> Does anyone know of a way to find out when day light savings is due to >> happen >> > -- > 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 [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/weewx-user/42d7c938-9d90-4df7-9240-928584eb3d7en%40googlegroups.com > <https://groups.google.com/d/msgid/weewx-user/42d7c938-9d90-4df7-9240-928584eb3d7en%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- Peter Quinn (415)794-2264 -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/CAA1SM22KWLBgpD%2Buw%3DMj-jAE%3DcEr99my2%2BO2enSxfXAjsL3mYw%40mail.gmail.com.
