First light question by Campion

[grahameb]

Sunrise on 7th August 1985 was at 5.32am. As I said, it does start to get light before sunrise.

Bridget when was the longest day? And don't say June 1944.

[Bridget]

Bridget when was the longest day? And don't say June 1944.

Around June 21st.

[grahameb]

Around June 21st.

So the days were drawing in at the time. Good research Bridget.

[Reader]

When the police first arrived, it was 5 hours after moonrise and 9 hours before moonset. The moon moves in an arc and at its highest point is not directly overhead.

When good visibility commences depends considerably on the amount and nature of cloud cover. It should have been "broad daylight" by 6am, with dawn at around 5am, but "first light" could be well before that if the cloud conditions were favourable. On 8th August this year, conditions were probably similar to those on 7th August 1985.

Edit: on 27th August, it was still generally dark 1 1/4 hours before sunrise, with some stars visible, but there was some light on the horizon in the north-east (I didn't have a view to the east and there was no moon, as it had set before 2am).