I have never read about that before, I assumed they just sexed them as soon as they were all dry. In that case I would think that 3/23 would be the day that they will ship your chicks because they are saying that chicks are available on that day. If you really want to know you could call Murray McMurray and see what day the chicks will be shipped so you know what day to be expecting your chicks' arrival.@Bloveschickens That is what I thought but then I read that they need to be a day old to sex them, and since we ordered layers (which need to be hens) I am assuming they need to wait? Do you know any details?