Hi,
i don't speak English nothing, nothing....
I from Santiago of Chile or Chili , south America
Answer your question, is
It means when he speaks of the time in another place ...
eg telephone conversation: QUE HORA ES ALLÁIn chile?, ie it is like, QUE HORA ES ALLÍ, refer to the same ...
hopefully help you with something I know nothing about any English ... if you know English could be exchanged for you to learn Spanish and I can learn English! :)