How to say 黑夜期间in English?

黑夜期间

during the night <> during the day

Cats are very active during the night.

补充：与during the day相对的当然是during the night。

如果你要说黑夜期间，就是dark night times，during是“在”的意思。

再补充：那说“请在晚上找我”（相对意思就说白天不要找我） 应该怎么说？
Please contact me during evenings.

这个时候就要用evening，你总不想你睡了，都黑夜了，别人来找你吧。

during the dark\late night

during the dark night
It is very quiet during the dark night.黑夜期间万籁俱静。

during the night
eg:we don't know when it snowed during the night.

"during the night" is better.

Or you can say "in the middle of the night".