Calculating how long Nebuchadnezzar reigned (40, 43, or 45 years) / Calculating 70 years of the Babylonian Exile / Babylonians -> Medians -> Persians -> Greeks / What about Cambyses and the hidden years? / Achashverosh's opulent party / Vashti is killed on Yom Kippur / When was the 180-day party (Summer or Winter)? / Vashti refuses to join the party naked / Memuchan = Daniel or Haman