'Period' in the Bible

Then I heard a holy one speaking. Another holy one said to the one who was speaking, "To what period of time does the vision pertain -- this vision concerning the daily sacrifice and the destructive act of rebellion and the giving over of both the sanctuary and army to be trampled?"

So know and understand: From the issuing of the command to restore and rebuild Jerusalem until an anointed one, a prince arrives, there will be a period of seven weeks and sixty-two weeks. It will again be built, with plaza and moat, but in distressful times.