Caution Snowstorm Sale Question.

My question is - "CONDITIONS… Six different Legacy skins will go on sale everyday, starting December 16 until January 7 at 23:59 PST." Is what it says. Does this mean 6 Legacy Skins will go on sale for one day and leave the next day for another 6 legacy skins to come in? (Will the 6 skins go away after the day is over...?)