Under the alter and signs in the moon

"Rest yet for a little time" (Rev. 6.11) - This would alone prove that the church cannot be rapturd all at once, because waiting implies a long and protracted persecution. Israel has retrieved Jerusalem in 1967 and man has landed on the moon two years after: the "moon became as blood" (v.12). A total lunar eclipse makes the moon red, and they are happening regularly all over the globe, so this is not a special event. Therefore the moon becoming blood red must mean something else. The only thing that makes sense to me regarding signs in the moon is man landed on the moon. If it was red before, going to the moon would be even more red from the expectation of the eyes. I wonder if this is the meaning of signs in the moon?

Those who have been martyred are "under the altar" (v.9); they are given white robes for their overcoming through martyrdom. When are they raptured? Since it appears that at least some of the events of the the 6th seal have been going on several decades now, when are those in the 5th seal raptured? Were they raptured already, but we don't know about it since they are were already asleep in sheol/hades? Perhaps they don't need to be raptured with those at the first rapture, that is, those who are alive reading to be received to the throne for keeping the Word of His patience (3.10).