66759 Chippy catches the very last few seconds of weak light at Challow, as the sun disappears into a bank of cloud in the west on 17 January 2019. The train is the 6V32 10:48 Tilbury to Trostre steel empties. This had left two hours late, and was still over an hour late here. The train was terminated at Pengam. Obviously it would have been in full sun if it had been running on time (it was virtually full sun just a few minutes earlier!), but I wouldn't have seen it, as I was at Crofton at the booked time.