Evening twilight or dusk — the time when the sun has set and it begins to get dark; often conveys a quiet or melancholic mood.
夕暮れになると街灯が次々と点く。
At dusk the streetlights come on one after another.
彼女は夕暮れの海辺で写真を撮った。
She took photos by the seaside at dusk.
夕暮れ時は犬の散歩をする人が多い。
Many people walk their dogs at dusk.