Detailed description of the date command in Linux

Date-print or set the system date and time

Displays the date and time of the system.
Syntax:
Usage:

Date [-u] [-d datestr] [-s datestr] [-- utc] [-- universal] [-- date = datestr] [-- set = datestr] [-- help] [-- version] [+ FORMAT] [MMDDhhmm [[CC] YY] [. ss]

Note:

Date can be used to display or set the date and time of the system. In terms of display, you can set the format to be displayed. The format is set to a plus sign followed by several tags, the available tags are listed as follows:

Time:

%: Print %
% N: Next row
% T: Skip
% H: hour (00 .. 23)
% I: hour (01 .. 12)
% K: hour (0 .. 23)
% L: hour (1 .. 12)
% M: minute (00 .. 59)
% P: displays local AM or PM
% R: direct display time (in 12-hour format: hh: mm: ss [AP] M)
% S: the number of seconds since January 1, 1970 00:00:00 UTC till now
% S: seconds (00 .. 61)
% T: direct display time (in 24-hour format)
% X: equivalent to % H: % M: % S
% Z: display the time zone

Date:
% A: The day of the week (Sun .. Sat)
% A: The day of the week (Sunday .. Saturday)
% B: Month (Jan .. Dec)
% B: Month (January... December)
% C: Display date and time directly
% D: Day (01 .. 31)
% D: Display date directly (mm/dd/yy)
% H: Same as % B
% J: The day of the year (001 .. 366)
% M: Month (01 .. 12)
% U: Week (00 .. 53) of the year (the first day of the week on Sunday)
% W: The day of the week (0 .. 6)
% W: Week (00 .. 53) of the Year (Monday is the first day of the week)
% X: Display date directly (mm/dd/yy)
% Y: last two digits of the Year (00.99)
% Y: full year (0000 .. 9999)

If it does not start with a plus sign, the time is set, and the time format is MMDDhhmm [[CC] YY] [. ss], where MM is the month, DD is the day, hh is the hour, mm is the minute, CC is the first two digits of the Year, YY is the second digit of the Year, ss is the second digit
Parameters:

-D datestr: display the time set in datestr (non-system time)
-- Help: displays auxiliary messages.
-S datestr: set the system time to the time set in datestr
-U: displays the current Greenwich Mean Time.
-- Version: displays the version number.
Example:

The date command and related time zone explanation in Linux

Linux certification guide: Linux date command parameters and Usage Details