thank you for your fast answer!
I have tested to change the date format, also .raw. But doesn't work.
<p>$almanac(date=($almanac.moon.next_transit.format("%Y/%m/%d
%H:%M"))).moon.alt</p>
<p>$almanac(date=($almanac.moon.previous_transit.format("%z"))).moon.alt</p>
<p>$almanac(date='2019/1/1 00:00:00').moon.alt</p>
<p>$almanac(date=1568985086).moon.alt</p> #Unix epoch
<p>$almanac(date=36517.5).moon.alt</p> #Dublin Julian date
None of them worked, no error in syslog.
>
Am Freitag, 20. September 2019 14:05:12 UTC+2 schrieb Thomas Keffer:
>
> A tag like $almanac.moon.next_transit returns an object of type
> ValueHelper, not a floating point number. ValueHelpers contain not only
> the floating point number, but also formatting and labeling information. To
> get the embedded number, use the ".raw" suffix. See the section *Formatting
> options <http://www.weewx.com/docs/customizing.htm#formatting_options>* in
> the Customizing Guide. Your expression becomes (NOT TESTED):
>
> $almanac(date=($almanac.moon.next_transit*.raw*)).moon.alt
>
> -tk
>
>
> On Fri, Sep 20, 2019 at 4:38 AM Bernhard Walser <[email protected]
> <javascript:>> wrote:
>
>> Hello
>>
>> I want to write a code witch calculatetes the difference between, the
>> moon altiude at transit today, and altitude at transit yesterday.
>> this would give me the "übergehende Mond" or "untergehende Mond".
>>
>> a code like this don't work:
>>
>> $almanac(date=($almanac.moon.next_transit)).moon.alt
>> $almanac(date=($almanac.moon.previous_transit)).moon.alt
>>
>> it seems i cant manipulate the time of the ethem observer.
>>
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>>
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