Central Meridian of Mars, 2011 Date Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1 56.3 110.6 192.5 243.3 305.0 359.3 65.9 124.4 183.7 253.0 313.1 24.7 2 46.5 100.7 182.5 233.3 295.1 349.4 56.1 114.7 174.0 243.3 303.5 15.2 3 36.7 90.8 172.6 223.4 285.2 339.6 46.4 104.9 164.3 233.6 293.8 5.6 4 26.8 80.9 162.6 213.4 275.3 329.8 36.6 95.2 154.6 223.9 284.2 356.1 5 17.0 71.0 152.6 203.4 265.4 320.0 26.9 85.5 144.9 214.3 274.5 346.5 6 7.2 61.1 142.7 193.5 255.5 310.2 17.1 75.8 135.2 204.6 264.9 337.0 7 357.3 51.2 132.7 183.5 245.6 300.4 7.4 66.1 125.5 194.9 255.3 327.4 8 347.5 41.3 122.7 173.6 235.7 290.6 357.7 56.4 115.8 185.2 245.6 317.9 9 337.6 31.3 112.7 163.6 225.8 280.8 347.9 46.7 106.1 175.5 236.0 308.4 10 327.8 21.4 102.8 153.6 215.9 271.0 338.2 37.0 96.5 165.9 226.3 298.9 11 318.0 11.5 92.8 143.7 206.1 261.2 328.5 27.3 86.8 156.2 216.7 289.4 12 308.1 1.6 82.8 133.7 196.2 251.4 318.7 17.6 77.1 146.5 207.1 279.8 13 298.3 351.6 72.9 123.8 186.3 241.6 309.0 7.9 67.4 136.8 197.5 270.3 14 288.4 341.7 62.9 113.8 176.4 231.9 299.3 358.2 57.7 127.1 187.8 260.9 15 278.5 331.8 52.9 103.9 166.6 222.1 289.5 348.5 48.0 117.5 178.2 251.4 16 268.7 321.8 42.9 93.9 156.7 212.3 279.8 338.8 38.3 107.8 168.6 241.9 17 258.8 311.9 32.9 84.0 146.8 202.5 270.1 329.1 28.6 98.1 159.0 232.4 18 249.0 302.0 23.0 74.0 137.0 192.7 260.4 319.4 18.9 88.4 149.4 222.9 19 239.1 292.0 13.0 64.1 127.1 183.0 250.6 309.7 9.2 78.8 139.8 213.5 20 229.2 282.1 3.0 54.2 117.3 173.2 240.9 300.0 359.6 69.1 130.1 204.0 21 219.4 272.1 353.0 44.2 107.4 163.4 231.2 290.3 349.9 59.4 120.5 194.6 22 209.5 262.2 343.1 34.3 97.6 153.7 221.5 280.6 340.2 49.8 110.9 185.1 23 199.6 252.2 333.1 24.4 87.7 143.9 211.8 270.9 330.5 40.1 101.4 175.7 24 189.7 242.3 323.1 14.4 77.9 134.1 202.1 261.2 320.8 30.4 91.8 166.3 25 179.9 232.3 313.1 4.5 68.1 124.4 192.3 251.5 311.1 20.8 82.2 156.8 26 170.0 222.4 303.2 354.6 58.2 114.6 182.6 241.8 301.4 11.1 72.6 147.4 27 160.1 212.4 293.2 344.7 48.4 104.9 172.9 232.2 291.7 1.4 63.0 138.0 28 150.2 202.4 283.2 334.7 38.6 95.1 163.2 222.5 282.1 351.8 53.4 128.6 29 140.3 273.2 324.8 28.7 85.4 153.5 212.8 272.4 342.1 43.9 119.3 30 130.4 263.3 314.9 18.9 75.6 143.8 203.1 262.7 332.5 34.3 109.9 31 120.5 253.3 9.1 134.1 193.4 322.8 100.5 Motion of the Central Meridian 0h 1h 2h 3h 4h 5h 6h 7h 8h 9h 10h 11h m o o o o o o o o o o o o 0 0.0 14.6 29.2 43.9 58.5 73.1 87.7 102.3 117.0 131.6 146.2 160.8 10 2.4 17.1 31.7 46.3 60.9 75.5 90.2 104.8 119.4 134.0 148.6 163.3 20 4.9 19.5 34.1 48.7 63.4 78.0 92.6 107.2 121.8 136.5 151.1 165.7 30 7.3 21.9 36.6 51.2 65.8 80.4 95.0 109.7 124.3 138.9 153.5 168.1 40 9.7 24.4 39.0 53.6 68.2 82.8 97.5 112.1 126.7 141.3 156.0 170.6 50 12.2 26.8 41.4 56.0 70.7 85.3 99.9 114.5 129.1 143.8 158.4 173.0 60 14.6 29.2 43.9 58.5 73.1 87.7 102.3 117.0 131.6 146.2 160.8 175.4