General questions about 50% Sale

Hey guys I have a question, I have the code and everything, I've tested it with some mices, but when I try to purchase the Razer Blackwidow Chroma, it says that it's out of stock, when the sale passes, can I still use my code on the RBC when it's back in stock or will the code be invalid?

Also, apparently there is another sale, due to the "fuck-ups", (Quote CEO of Razer) could someone tell me the exact times in which the second sale occured?