http://community.ring.com/conversations/amazon-alexa-ring/guidelines__what-is-the-cheapest-day-to-on/67e98a8bdedd5e250db19325
http://community.ring.com/conversations/amazon-alexa-ring/cheap-deal__what-is-the-cheapest-day-to-on/67e98adf66bea62fe16c3bbb
http://community.ring.com/conversations/amazon-alexa-ring/faqsguide-what-is-the-cheapest-day-to-on/67e996d034497d30c416210f
http://community.ring.com/conversations/welcome-to-the-ring-community/faqsib-what-is-the-cheapest-day-to-on/67e9990c3a8e146adef729fe
http://support.google.com/edu/classroom/thread/334748228?hl=en&sjid=11245256931608138727-NA
http://support.google.com/edu/classroom/thread/334749297?hl=en&sjid=11245256931608138727-NA