Function calculateSunriseSunset

calculateSunriseSunset(
sunLongitude: number,
latitude: number,
): { dayLengthHours: number; sunrise: number; sunset: number }
Calculate local Sunrise and Sunset times.

Maps the traditional Dinamana calculation to modern civil hours relative to local solar noon (12:00).
Parameters
- sunLongitude: number
  True Sun longitude
- latitude: number
  Observer's latitude
Returns { dayLengthHours: number; sunrise: number; sunset: number }
Transition times in decimal hours