What's the difference between midnight and early midnight when arranging eight characters?

Purple stone begins at night 1 1 and ends at morning 1. At midnight and before noon, the discharge result should be the same eight characters.

Here are two examples to illustrate (the eight-character arrangement does not consider the sun):

Night time: 2005-11-09 23: 00: 00? The eight characters are arranged as follows:

Early childhood: The eight characters of Gregorian calendar 2005-1-1000: 59: 59 are arranged as follows:

The eight characters at night and in the early hours are: Yiyou Dinghai, Renzi.