Workaround: NTP behind proxy

#!/bin/bash

PATH="https://ntp-a1.nict.go.jp/cgi-bin/time"
echo Get date from "$PATH"

# Shell will execute /usr/bin/curl $PATH,
# then printed by echo
NOW="`/usr/bin/curl $PATH`"
echo $NOW

# Update system date time
/usr/bin/sudo date --set="$NOW"