| [987] | 1 | \chapter{GCM Martian Calendar} |
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| 2 | |
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| 3 | \label{sc:sol2ls} |
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| 4 | |
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| 5 | |
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| 6 | For Mars, dates and seasons are expressed in Solar Longitude ($L_s$, |
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| 7 | in degrees or in radians) counting from the northern hemisphere spring equinox. |
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| 8 | In the GCM, time is counted in Martian solar days, or ``sols'' |
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| 9 | (1 sols = 88775 s) from the northern spring equinox. |
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| 10 | The following table gives the correspondence between sols and $L_s$, |
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| 11 | calculated for the GCM using one Martian year = 669 sols exactly. |
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| 12 | |
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| 13 | \vspace{0.5cm} |
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| 14 | |
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| 15 | \footnotesize |
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| 16 | |
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| 17 | \hspace*{-2.cm}\begin{tabular}{|c|c|c||c|c|c||c|c|c|} |
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| 18 | \hline |
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| 19 | sol & $L_s$ & & sol & $L_s$ & & sol & $L_s$ & \\ |
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| 20 | \hline |
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| 21 | 0. & 360.000 & Spring equinox N &240. & 111.455& &480. & 247.408& \\ |
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| 22 | 5. & 2.550 & &245. & 113.816& &485. & 250.666& \\ |
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| 23 | 10. & 5.080 & &250. & 116.190& &490. & 253.925& \\ |
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| 24 | 15. & 7.590 & &255. & 118.578& &495. & 257.182& \\ |
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| 25 | 20. & 10.081 & &260. & 120.981& &500. & 260.435& \\ |
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| 26 | 25. & 12.554 & &265. & 123.400& &505. & 263.683& \\ |
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| 27 | 30. & 15.009 & &270. & 125.835& &510. & 266.924& \\ |
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| 28 | & & & & & &514.76 & 270.& Winter solstice N \\ |
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| 29 | 35. & 17.447 & &275. & 128.287& &515. & 270.156& \\ |
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| 30 | 40. & 19.869 & &280. & 130.756& &520. & 273.377& \\ |
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| 31 | 45. & 22.275 & &285. & 133.243& &525. & 276.587& \\ |
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| 32 | 50. & 24.666 & &290. & 135.750& &530. & 279.783& \\ |
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| 33 | 55. & 27.043 & &295. & 138.275& &535. & 282.965& \\ |
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| 34 | 60. & 29.407 & &300. & 140.821& &540. & 286.130& \\ |
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| 35 | 65. & 31.758 & &305. & 143.388& &545. & 289.277& \\ |
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| 36 | 70. & 34.096 & &310. & 145.975& &550. & 292.406& \\ |
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| 37 | 75. & 36.423 & &315. & 148.585& &555. & 295.515& \\ |
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| 38 | 80. & 38.739 & &320. & 151.217& &560. & 298.604& \\ |
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| 39 | 85. & 41.046 & &325. & 153.872& &565. & 301.671& \\ |
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| 40 | 90. & 43.343 & &330. & 156.550& &570. & 304.715& \\ |
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| 41 | 95. & 45.631 & &335. & 159.251& &575. & 307.737& \\ |
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| 42 | 100. & 47.912 & &340. & 161.977& &580. & 310.735& \\ |
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| 43 | 105. & 50.186 & &345. & 164.727& &585. & 313.709& \\ |
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| 44 | 110. & 52.453 & &350. & 167.502& &590. & 316.658& \\ |
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| 45 | 115. & 54.714 & &355. & 170.301& &595. & 319.583& \\ |
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| 46 | 120. & 56.970 & &360. & 173.126& &600. & 322.483& \\ |
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| 47 | 125. & 59.222 & &365. & 175.975& &605. & 325.358& \\ |
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| 48 | 130. & 61.471 & &370. & 178.850& &610. & 328.207& \\ |
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| 49 | . & & &371.99 & 180. & Autumn equinox N & . & & \\ |
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| 50 | 135. & 63.716 & &375. & 181.750& &615. & 331.032& \\ |
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| 51 | 140. & 65.959 & &380. & 184.675& &620. & 333.831& \\ |
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| 52 | 145. & 68.201 & &385. & 187.624& &625. & 336.606& \\ |
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| 53 | 150. & 70.442 & &390. & 190.598& &630. & 339.356& \\ |
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| 54 | 155. & 72.683 & &395. & 193.596& &635. & 342.082& \\ |
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| 55 | 160. & 74.925 & &400. & 196.618& &640. & 344.783& \\ |
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| 56 | 165. & 77.168 & &405. & 199.662& &645. & 347.461& \\ |
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| 57 | 170. & 79.413 & &410. & 202.729& &650. & 350.116& \\ |
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| 58 | 175. & 81.661 & &415. & 205.818& &655. & 352.748& \\ |
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| 59 | 180. & 83.912 & &420. & 208.927& &660. & 355.357& \\ |
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| 60 | 185. & 86.167 & &425. & 212.056& &665. & 357.945& \\ |
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| 61 | & & & & & &669. & 0.& Spring equinox N \\ |
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| 62 | 190. & 88.427 & &430. & 215.203& &670. & 0.512& \\ |
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| 63 | 193.47 & 90. & Summer solstice N & & & & & & \\ |
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| 64 | 195. & 90.693 & &435. & 218.368& &675. & 3.057& \\ |
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| 65 | 200. & 92.965 & &440. & 221.549& &680. & 5.583& \\ |
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| 66 | 205. & 95.245 & &445. & 224.746& &685. & 8.089& \\ |
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| 67 | 210. & 97.532 & &450. & 227.955& &690. & 10.577& \\ |
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| 68 | 215. & 99.827 & &455. & 231.177& &695. & 13.046& \\ |
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| 69 | 220. & 102.131 & &460. & 234.409& &700. & 15.498& \\ |
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| 70 | 225. & 104.446 & &465. & 237.650& &705. & 17.933& \\ |
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| 71 | 230. & 106.770 & &470. & 240.898& &710. & 20.351& \\ |
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| 72 | 235. & 109.107 & &475. & 244.151& &715. & 22.755& \\ |
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| 73 | 240. & 111.455 & &480. & 247.408& &720. & 25.143& \\ |
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| 74 | \hline |
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| 75 | |
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| 76 | \end{tabular} |
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