(34S) - Sunrise/Sunset

[Kiwi Geoff]

(01-28-2015 08:08 PM)Jeff O. Wrote:  **Update No. 2**
Yet another version, this time with local registers and DST correction built in. (Thanks and credit to Dieter for the DST code.) DST settings are for the US, DST beginning on the second Sunday in March and ending on the first Sunday in November.

Hi Jeff,

Those of us living below the equator are coming up to our Autumn (or Spring in Northern Hemisphere) - our seasons are the opposite. To make Dieter's DST code work correctly for both North & South Hemispheres, I ADDED 3 lines of code ( marked with **NEW** ) as per the following - to make the code work properly for us "Down Under".

Code:


...
SF A           //  Set Flag A (assume DST)
x[>=]? Y       //  IF date < 1st DST day
x[>=]? Z       //  OR date = 1st day with standard time
CF A           //  THEN clear flag A
RCL .01        //  **NEW**  Recall Latitude
x[<=]0?        //  **NEW**  Southern Hemisphere ?
FF A           //  **NEW**  "Flip" DST Flag for Southern Hemisphere 
RTN
...

N.B. This does not include the actual DST begin and end dates - which are different for each country etc.

Regards, Kiwi Geoff.