#!/bin/sh
for tz in \
	'HST10 US/Hawaii' \
	'PST8PDT US/Pacific' \
	'MST7MDT US/Mountain' \
	'CST6CDT US/Central' \
	'EST5EDT US/Eastern' \
	GMT0 \
	Europe/Kiev
do 
	TZ="$(set -- $tz; printf '%s\n' "$1")"
	printf '%s\n' "$(TZ="$TZ" date -Iseconds "$@") $(TZ="$TZ" date "$@") $tz"
done |
sort -u

#	'EST5EDT US/Eastern' \
#	Europe/London \
#	Asia/Kolkata
#	Europe/Kyiv
# (for TZ in $(cd /usr/share/zoneinfo && find * -follow -type f -exec file -L \{\} \; | sed -ne 's;^\([^:]*\): timezone data,.*$;\1;p'); do export TZ; date -d @1707350400 | tr '\012' ' '; echo "$TZ"; done) | sort -k 3,3bn -k 4,4