Calculating Sunrise and Sunset 2

[Acetronics2]

table example here ... https://www.suntoday.org/sunrise-sunset/2024.html

Alain

[amgen]

Just a thought: from what I understand from Amgen's and Henrik's suggestions, is that the sunrise and sunset would be roughtly linearly calculable

black is my attempt at a straight line.... follows actual times fairly close enough to actual exact times. It is just adding and subtracting X minutes each day for 1/2 a year then switching the add-subtract.

[rocket_troy]

And there's always NBit math libraries if you really wanted to do with with a PIC. I've used them a lot with PICs and PBP. The workarounds can be painful if you're dealing with >32bit numbers that could either be positive or negative as the numbers aren't signed.

Troy