Just a small function I just added to my zshrc.
global() {
printf "Local: %s\n" $(date +%H:%M)
printf "\33[2K\r\033[1;32mIndia: %s\033[0m\n" $(TZ="Asia/Kolkata" date +%H:%M)
printf "\33[2K\r\033[1;31mUS West: %s\033[0m\n" $(TZ="America/Phoenix" date +%H:%M)
printf "\33[2K\r\033[1;34mUS East: %s\033[0m\n" $(TZ="America/Atlanta" date +%H:%M)
printf "\33[2K\r\033[1;33mNepal: %s\033[0m\n" $(TZ="Asia/Kathmandu" date +%H:%M)
}