If I am awake past 12am, it is still that night for me, and the next day does not begin until I wake up that day. I have pretty much always thought like this.
For example: Even though it is in the 2am hour on Saturday, it is still Friday in my mind. I will not acknowledge it being Saturday until I have fallen asleep and wake up fully rested.
I am just wondering, does anyone else think like this?