My timezone is IST - Indian Standard Time. It is 5.5hrs ahead of UTC.

On Sat, 8 Sep 2018 at 19:57, Pat <[email protected]> wrote:

> Yeah, the JavaScript needs it in offset hours (not minutes). But maybe I
> need to do the conversion in JavaScript and not Python.
>
> What's the name of your timezone so I can reproduce it on my lab system?
>
> Thanks for filing issues - will help me keep track of them all.
>
> On Saturday, September 8, 2018 at 10:16:38 AM UTC-4, Praveen
> Chandrasekaran wrote:
>>
>> Never examined that so closely. 19800/60 is still in minutes so no
>> rounding issues there. It is the additional divide by 60 that causes the
>> issue.
>>
>> On Sat, 8 Sep 2018 at 19:45, Pat <[email protected]> wrote:
>>
>> Are your highcharts from Gary working with the right timezone?
>>
>> This UTC offset code is the same that's used in his code
>> <https://github.com/gjr80/weewx-highcharts/blob/master/bin/user/highchartsSearchX.py#L214-L216>
>> with an additional /60 for JavaScript's requirements. .
>>
>> On Saturday, September 8, 2018 at 10:13:14 AM UTC-4, Praveen
>> Chandrasekaran wrote:
>>
>> Hi Pat,
>>
>> You are right.
>>
>> 19800/60/60 gets rounded off to 5 instead of 5.5. So another issue to fix
>> :)
>>
>> Regards,
>> Praveen
>>
>> On Sat, 8 Sep 2018 at 19:36, Pat <[email protected]> wrote:
>>
>> Interesting. On your Pi command line, type this:
>>
>> python
>> import time
>> time.localtime( time.time() )
>>
>> What does it return? Does it look accurate?
>>
>> For example mine is accurate:
>> time.struct_time(tm_year=2018, tm_mon=9, tm_mday=8, tm_hour=10, tm_min=4,
>> tm_sec=42, tm_wday=5, tm_yday=251, tm_isdst=1)
>>
>>
>>
>> Then try this in the Python window:
>>
>> import calendar
>> moment_js_stop_struct = time.localtime( time.time() )
>> moment_js_utc_offset = (calendar.timegm(moment_js_stop_struct) -
>> calendar.timegm(time.gmtime(time.mktime(moment_js_stop_struct))))/60/60
>> print moment_js_utc_offset
>>
>>
>> What does it return? It should return 5.5, but this could be the problem.
>> Maybe there is a rounding going on to 5.
>>
>> Mine returns "-4"
>>
>>
>>
>>
>>
>>
>> On Saturday, September 8, 2018 at 10:02:13 AM UTC-4, Praveen
>> Chandrasekaran wrote:
>>
>> Hi Pat,
>>
>> The offset in page source there is 5. It should have been 5.5. Here is
>> result of date and date -u on my pi
>>
>> READ WRITE : root@raspberrypi:/var/tmp# date
>> Sat  8 Sep 19:28:58 IST 2018
>> READ WRITE : root@raspberrypi:/var/tmp# date -u
>> Sat  8 Sep 13:59:11 UTC 2018
>>
>> As per this timezone is fine on my pi and can clearly see offset should
>> have been 5.5 hours.
>>
>> Regards,
>> Praveen
>>
>> On Sat, 8 Sep 2018 at 19:25, Pat <[email protected]> wrote:
>>
>> Does it have to do with a locale / timezone?
>>
>> Here is the code. All it is doing is taking the timestamp from MQTT and
>> converting it to
>>
>> ...
>
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