Q:

How to configure Git bash prompt by adding datetime?

My msysgit Git bash command-line prompt looks like this right now:
GitUserName@WorkStationName WorkSpacePath (BranchName)

I would like to have a timestamp in front of that line, like HH:mm (hours:minutes).
Does anyone know how I can easily do this?

A:

I've found that using the file \Git\etc\profile.d\git-prompt.sh you can add a line that looks like this to add datetime to your prompt
PS1="$PS1"'\[\033[35m\]\D{%F %T} ' (as seen here for formatting details)
My prompt currently looks like this
2015-11-08 23:48:08 Sean@pc-01 /c/dev/projects
PS1='\[\033]0;$MSYSTEM:${PWD//[^[:ascii:]]/?}\007\]' # set window title
PS1="$PS1"'\n'                 # new line
PS1="$PS1"'\[\033[35m\]\D{%F %T} '
PS1="$PS1"'\[\033[32m\]'       # change to green
PS1="$PS1"'\u@\h '             # user@host<space>
PS1="$PS1"'\[\033[35m\]'       # change to purple
#PS1="$PS1"'$MSYSTEM '          # show MSYSTEM
PS1="$PS1"'\[\033[33m\]'       # change to brownish yellow
PS1="$PS1"'\w'                 # current working directory
if test -z "$WINELOADERNOEXEC"
then
    GIT_EXEC_PATH="$(git --exec-path 2>/dev/null)"
    COMPLETION_PATH="${GIT_EXEC_PATH%/libexec/git-core}"
    COMPLETION_PATH="${COMPLETION_PATH%/lib/git-core}"
    COMPLETION_PATH="$COMPLETION_PATH/share/git/completion"
    if test -f "$COMPLETION_PATH/git-prompt.sh"
    then
        . "$COMPLETION_PATH/git-completion.bash"
        . "$COMPLETION_PATH/git-prompt.sh"
        PS1="$PS1"'\[\033[36m\]'  # change color to cyan
        PS1="$PS1"'`__git_ps1`'   # bash function
    fi
fi
PS1="$PS1"'\[\033[0m\]'        # change color
PS1="$PS1"'\n'                 # new line
PS1="$PS1"'$ '                 # prompt: always $

Note: The answer using $(/bin/date) did not work for me as I think I was having trouble pathing to \Git\usr\bin\date.exe

A:

If by date you mean the current time/date, then this example can help:
 PS1="\n\[\033[35m\]\$(/bin/date)\n\[\033[32m\]\w\n\[\033[1;31m\]\u@\h: \[\033[1;34m\]\$(/usr/bin/tty | /bin/sed -e 's:/dev/::'): \[\033[1;36m\]\$(/bin/ls -1 | /usr/bin/wc -l | /bin/sed 's: ::g') files \[\033[1;33m\]\$(/bin/ls -lah | /bin/grep -m 1 total | /bin/sed 's/total //')b\[\033[0m\] -> \[\033[0m\]"

It uses $(/bin/date) and is a multi-line prompt containing date/time, full path, user and host, active terminal, even file count and space usage.
It illustrates how you could integrate the date in your own git prompt.

The OP deblendewim comments:

I was also wondering how to change it without running it immediatly in the prompt.
  Changed profile-file from: 

if test -z "$WINELOADERNOEXEC" then PS1='\[\033]0;$MSYSTEM:\w\007 \033[32m\]\u@\h \[\033[33m\w$(__git_ps1)\033[0m\] $ ' else PS1='\[\033]0;$MSYSTEM:\w\007 \033[32m\]\u@\h \[\033[33m\w\033[0m\] $ ' 

into 

if test -z "$WINELOADERNOEXEC" then PS1='\[\033]0;$MSYSTEM:\w\007 \[\033[36m\]\t \[\033[32m\]\u@\h \[\033[33m\w$(__git_ps1)\033[0m\] $ ' else PS1='\[\033]0;$MSYSTEM:\w\007 \[\033[36m\]\t \[\033[32m\]\u@\h \[\033[33m\w\033[0m\] $ ' 

