BASH Script to display dates and times for any world time zone

world-date.sh

#!/bin/sh

# Show date and time in other time zones
# Source: python - command-line world clock? - Stack Overflow
# https://stackoverflow.com/questions/370075/command-line-world-clock

function world_date(){
    if [ "$1"x != 'x' ]; then
      search=$1
    else
      echo "Please provide a time zone."
    fi
    zoneinfo=/usr/share/zoneinfo/posix/
    format='%a %F %T'

    find -L $zoneinfo -type f \
        | grep -i "$search" \
        | while read z; do
              d=$(TZ=$z date +"$format")
              printf "%-34s %23s\n" ${z#$zoneinfo} "$d"
          done
}

world_date $1

# EOF

This works nicely in BASH on Ubuntu on Windows Subsystem for Linux (WSL) on Windows 10.