I believe that the time in Peru is one hour later than Alta. This news article says the results will be announced at 21:30 their time, or 8:30 pm Alberta time if there is a clear winner.
http://news.xinhuanet.com/english2010/world/2011-06/05/c_13912449.htm
Other reports say it may come down to a recount. Hopefully it has no impact on SLI either way.