#!/bin/bash
#
# List of time zones to iterate through
timezones=(
    "UTC"
    "America/Los_Angeles"
    #"Europe/London"
    "Europe/Stockholm"
)
sep="------------------------------------------------"

time="$1"
if [ -z "$1" ]; then
    time="now"
fi

echo $sep
echo "My Time:"
TZ="$(cat /etc/timezone)" date -d "@$(date -d "$time" +%s)"
echo $sep

# Loop through each time zone and calculate the new time
for tz in "${timezones[@]}"
do
    echo "Timezone: $tz"
    TZ="$tz" date -d "@$(date -d "$time" +%s)"
    echo $sep
done