Light

The Light method controls virtual sunlight in Unreal. By specifying a date and time of day, Unreal will simulate natural lighting conditions corresponding to real-world Sweden at that moment. This includes sun angle, intensity, and coloration, using Ultra Dynamic Sky.

Light is set using a LightRequest. There is no response associated with this request.

LightRequest

Sets the simulated date and solar time.

name	type	required	description
type	string	✓	"LightRequest"
year	number	✓	Year (2025)
month	number	✓	Month (1 – 12)
day	number	✓	Day (1 – 31)
solar_time	number	✓	Hour (0.0 – 24.0)

Example request:

{
  "type": "LightRequest",
  "year": 2025,
  "month": 5,
  "day": 20,
  "solar_time": 12
}