The prior month means the previous month, or often said, "the month before".
September.
the month be fore last
because when the days were recorded, the people who made watched the sun, made a recored on how the sun moved and when it was in a completely different side, it was always about the same time. 28 to...
Yes you do. Take birth control, one pill every day. When the pack finishes you start a new pack.