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.
