[Remind-Fans] Faking the time zone (was Re: sun moon data)

[Sector11]

Solar midnight look nice ... must play.

Thank you
Bruce

> I have some solar time functions that I use to calculate solar noon and 
> solar midnight.
> 
> ```
> FSET _light_len(date) MAX(SUNSET(date)-SUNRISE(date), 0)
> FSET _dark_len(date) 1440-_light_len(date)
> FSET _solar_noon(date) sunrise(date) + (_light_len(date)/2)
> FSET _solar_midnight(date) sunset(date) + (_dark_len(date)/2)
> ```
> 
> It's not as compact as Diane's suggestion, but I can do things like 
> report how many daylight hours there will be on a certain day.
> 
> You can call it like so:
> 
> ```
> REM [today()] AT [_solar_noon(today())] MSG 🌞Solar Noon!
> ```
> 
> Excerpts from Sector11 via Remind-fans's message of March 18, 2022 8:10 am:
> > Dianne you are going above and beyond the call of duty here.
> > 
> > I never thought to use TZ.
> > Using TX as shown do your also get:
> > ----------
> > Mittagssonne: 361
> > ----------
> > for solar noon?
> > 
> > Thank you
> > Bruce
> > 
> > 
> > On Thu, 17 Mar 2022 16:52:10 -0400
> > Dianne Skoll via Remind-fans <remind-fans at lists.skoll.ca> wrote:
> >   
> >> On Thu, 17 Mar 2022 11:54:33 -0300
> >> Sector11 via Remind-fans <remind-fans at lists.skoll.ca> wrote:
> >>   
> >> > Dianne I feel so silly and:
> >> > -----
> >> > faketime -f '+4' remind -q -r ~/.reminders.sun.v
> >> > -----
> >> > doesn't work.  :(    
> >> 
> >> No, but:
> >> 
> >>     TZ=Europe/Berlin remind -q -r ~/.reminders.sun.v
> >> 
> >> might.
> >> 
> >> Now I do see that it's off by about 10-12 minutes from
> >> some sources on the web, so I might need to investigate
> >> further.
> >> 
> >> Regards,
> >> 
> >> Dianne.
> >> _______________________________________________
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> >> Remind-fans at lists.skoll.ca
> >> https://dianne.skoll.ca/mailman/listinfo/remind-fans
> >> Remind is at https://dianne.skoll.ca/projects/remind/  
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> >   
> 
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