Funny prompt with zodiac sign

.bashrc

# This is a funny prompt that would display the zodiac sign corresponding to the date of creation (date when the file is sourced)

# computes the right UTF-8 zodiac sign from today's date
function __today_zodiac
{
	local today=$(date +%m%d)

	if [ $today -le 0120 ]
	then
		sign=$'\u2651' # "capricorn"
	elif [ $today -le 0219 ]
	then
		sign=$'\u2652' # "aquarius"
	elif [ $today -le 0320 ]
	then
		sign=$'\u2653' # "pisces"
	elif [ $today -le 0420 ]
	then
		sign=$'\u2648' # "aries"
	elif [ $today -le 0521 ]
	then
		sign=$'\u2649' # "taurus"
	elif [ $today -le 0621 ]
	then
		sign=$'\u264a' # "gemini"
	elif [ $today -le 0722 ]
	then
		sign=$'\u264b' # "cancer"
	elif [ $today -le 0822 ]
	then
		sign=$'\u264c' # "leo"
	elif [ $today -le 0923 ]
	then
		sign=$'\u264d' # "virgo"
	elif [ $today -le 1023 ]
	then
		sign=$'\u264e' # "libra"
	elif [ $today -le 1122 ]
	then
		sign=$'\u264f' # "scorpio"
	elif [ $today -le 1221 ]
	then
		sign=$'\u2650' # "sagittarius"
	else
		sign=$'\u2651' # "capricorn"
	fi

	eval "$1='$sign'"
}

# saves the today's zodiac in a variable
sign_of_birth=""
__today_zodiac sign_of_birth

# now we define the prompt in a command
function __prompt_command
{
  #we would like to display the last return code
	local EXIT="$?"
	local   reset="\[\033[0m\]"
	local   green="\[\033[32m\]"
	local    bold="\[\033[1m\]"
	local    cyan="\[\033[36m\]"
	local  yellow="\[\033[33m\]"
	local     red="\[\033[31m\]"

	local check_mark=$'\u2713'
	local   ballot_x=$'\u2717'
	PS1=""
	if [ $EXIT != 0 ]
	then
		PS1+="$red$ballot_x$reset ($EXIT)"
	else
		PS1+="$green$check_mark$reset"
	fi
  
	# optionally one would like to call __today_zodiac to update the sign for each command. Kind of overkill
	# __today_zodiac sign_of_birth
  
  	# the rest is a usual prompt displaying, here with __git_ps1
	PS1+=" \d|$bold\@$reset $yellow\w\n$green$bold\u$reset@$cyan\h$reset$red\$( __git_ps1 '(%s)')$reset $bold$sign_of_birth$reset "
}

#simply sets the prompt to use a prompt command
export PROMPT_COMMAND=__prompt_command