"while the stars, / Eastward, were sparkling clear"
"The orange sky of evening died away"
AQ: inevitable process of day turning to night, fading into darkness.
Just as the passing of time is unstoppable, so childhood pleasures mutate into adult awareness and responsibility and therefore 'melancholy'
WT - Metaphor passing childhood to adulthood - progress of day from setting sun to night
Sombre tone - everything becomes darker and bleaker as you grow up.
Z: 'sparkling clear' - memory is vivid romanticised. impact of childhood on adults - shapes you into who you are.