Ok, how does this PoS work. Clearly I'm not getting it.

Yesterday a bit over 1 mil of my coins matured 20 days and went to stake, a 11666 GHC transaction came through as mined and proceeded to get conformations.

Coins have gone from stake and are not mining.

So do the coins now have to go through a 20 day maturity cycle again before counting towards stake?

Math supports this but I want to be sure.

((1000000 * 20%) /365)*20= 10958