YOU SAID:

Let's party tonight at 8.

INTO JAPANESE

今夜は8時にパーティーしましょう。

BACK INTO ENGLISH

Let's have a party at eight tonight.

INTO JAPANESE

今夜8時にパーティーを開きましょう。

BACK INTO ENGLISH

Let's have a party at eight o'clock tonight.

INTO JAPANESE

今夜の8時にパーティーをしましょう。

BACK INTO ENGLISH

Let's have a party at eight o'clock tonight.