uniclock

#!/bin/bash
uniclock() {
    local clocks=(🕛 🕧 🕐 🕜 🕑 🕝 🕒 🕞 🕓 🕟 🕔 🕠
                  🕕 🕡 🕖 🕢 🕗 🕣 🕘 🕤 🕙 🕥 🕚 🕦)
    local hour=0 min=0 now=0 num=0 
    now="${1:-$(printf "%(%s)T\n" "-1")}"
    read -r hour min < <(printf "%(%l %M)T\n" "$now")
    min="${min#0}"
    num=$(( (hour * 2) + (min >= 30) ))
    printf "%s\n" "${clocks[$num]}"
}
if [[ "${BASH_SOURCE[0]}" == "$0" ]]; then uniclock "$@"; fi