# system timezone
Time.now.to_date == Date.today
# application timezone
Time.zone.now.to_date == Time.current.to_date == Time.zone.today == Date.current
http://edgeapi.rubyonrails.org/classes/Time.html#method-c-current
http://edgeapi.rubyonrails.org/classes/Date.html#method-c-current