before midnight \after midnight \at midnight \just in timebefore midnight \after midnight \at midnight \just in time

before midnight \after midnight \at midnight \just in timebefore midnight \after midnight \at midnight \just in time
before midnight \after midnight \at midnight \just in time
before midnight \after midnight \at midnight \just in time

before midnight \after midnight \at midnight \just in timebefore midnight \after midnight \at midnight \just in time
before midnight \after midnight \at midnight \just in time
午夜前、午夜后、午夜时、恰恰及时

午夜之前/午夜之后。午夜、正及时