I don't understand how daylight savings would make the time of the photo 8.37?
When William went missing on the 12/9/2014 NSW was 2 hours ahead of Bali. When daylight savings started in October 2014 NSW was 3 hours ahead of Bali.
The camera recorded the 5th photo (the roar photo) at 7.39am.
There are 2 possible scenarios here. The camera was set to Bali time or the camera was on Australian time.
If it was 7.39am Bali time then the photo was created at 9.39am NSW time.
If it was in fact 7.39 NSW time then proof of life was at 7.39, creating a different timeline.
Where does 8.39 come into play?
If the 9.37 corrected time was done by computer or human because they were on NSW daylight saving time then the photo was taken 3 hours earlier at 6.37/6.39.