英语有一个词，叫wee hours of the morning，直译就是“早晨尿尿时间”，但一般译为“凌晨”。

英语释义为：The very early hours after midnight；The  early  hours  of  the  morning  right  after  midnight；The time immediately after midnight. 更详细一点为：the early hours of the morning, between twelve o'clock at night and the time when the sun rises。也就是“午夜12点（Midnight is twelve o'clock in the middle of the night）之后到太阳升起时这一段时间”。