echo 'archlinux-host-name' > etc/hostname

ln -s /user/share/zoneinfo/Europe/Moscow /etc/localtime
  create a sym-link to existing time-zone

locales:

edit /etc/locale.gen

uncomment
en_US.UTF-8 UTF-8
en_US ISO-8859-1

en_GB

ru_RU.KOI8-R KOI8-R
ru_RU.UTF-8 UTF-8
ru_RU ISO-8859-5


edit /etc/locale.conf

LANG="en_US.UTF-8"

edit /etc/vconsole.conf

KEYMAP=us

run
$ locale-gen