After 9 o'clock at night, people turn on the lights in their houses, so the night view is even more beautiful.
After 9 o'clock at night, people turn off the lights in their homes, so the night view is not as pretty.
この場合、次のような言い方ができますよ。
ーAfter 9 o'clock at night, people turn on the lights in their houses, so the night view is even more beautiful.
「夜9時以降は、住宅に灯りがつくので夜景がもっと綺麗に見える」
to turn on the lights で「電気を点ける」
night view「夜景」
ーAfter 9 o'clock at night, people turn off the lights in their homes, so the night view is not as pretty.
「夜9時以降は、住宅の灯りが消えるので、夜景はあまり綺麗ではない」
to turn off the lights で「電気を消す」
ご参考まで！
カナダ 
