How to rotate an HDRI image?

When using both the native 3ds Max Bitmap node, or Corona Bitmap node, the procedure is identical:

Use "U Offset" value for this.

1 = 360 degrees
0,5 = 180 degrees
0,25 = 90 degrees

Note: entering full numbers into the U Offset will not introduce any change into the scene, as the HDRI will be always rotated by 360 degrees. Interactive rendering is very useful for determining the desired HDRI rotation.