Note at beginning how something in the clouds above sticks out momentarily as the car moves forward.
Note how a veil of glare from the Sun suddenly appears to mask or hide that something in the cloud.
Note the green- and purple-colored lights alternating on the Temple columns - not something that could be produced by reflections from the Sun.
It was in that cloud above the Temple that a brilliant golden light appeared, and a beam of light from it descended to Bonnie's grave, located just to the left of the Temple.
The Sun was on the horizon to the right (east) at 8:10 am on Sunday, 20 January 1991.