THE DARIAN SYSTEM

Abstract

Figures and Tables

1.0 The Darian Calendar for Mars

1.1 Introduction

1.2 Years

1.2.1 An Extended Intercalation Scheme

1.3 Months and Seasons

1.4 Weeks

1.4.1 The Martiana Calendar

1.5 The Telescopic Epoch

1.6 Darian-Gregorian Calendar Displays

1.7 Children and Collateral Relatives

2.0 The Calendars of Jupiter

2.1 Introduction

2.2 Circads

2.3 Years

2.4 Weeks

2.5 Months

2.6 Intercalation

2.7 Calibration

2.8 Variations on a Martian Theme

3.0 The Darian Calendar for Titan

3.1 Overview of the Darian Calendar System

3.2 Astronomical Cycles on Titan

3.3 Circads and Weeks

3.4 Months and Years

3.5 Intercalation

3.6 Calibration

4.0 Conclusion

5.0 References

Appendix 1: Intercalation Precision on Mars

Appendix 2: Perturbations of Mars

Appendix 3: Martian Daylight Time

THE DARIAN SYSTEM

Copyright © 1986-2005 by Thomas Gangale

AUTUMNAL EQUINOXES OF MARS
Gregorian Date UTC Julian Day Darian Date AMT Julian Sol
1875 June 11 13:19 2406050.555 141 Mithuna 10 21:32 94643.898
1877 April 28 12:46 2406737.532 142 Mithuna 10 11:51 95312.494
1879 March 16 12:37 2407424.526 143 Mithuna 11 02:34 95981.107
1881 January 31 11:19 2408111.472 144 Mithuna 10 16:09 96649.673
1882 December 19 10:35 2408798.441 145 Mithuna 11 06:17 97318.262
1884 November 05 10:52 2409485.453 146 Mithuna 10 21:25 97986.893
1886 September 23 09:57 2410172.415 147 Mithuna 11 11:23 98655.474
1888 August 10 08:32 2410859.356 148 Mithuna 11 00:51 99324.036
1890 June 28 08:06 2411546.338 149 Mithuna 11 15:17 99992.637
1892 May 15 07:42 2412233.321 150 Mithuna 11 05:44 100661.239
1894 April 02 06:57 2412920.290 151 Mithuna 10 19:52 101329.828
1896 February 18 07:10 2413607.299 152 Mithuna 10 10:56 101998.456
1898 January 05 06:33 2414294.273 153 Mithuna 11 01:10 102667.049
1899 November 23 05:08 2414981.214 154 Mithuna 10 14:39 103335.611
1901 October 11 04:26 2415668.185 155 Mithuna 11 04:49 104004.201
1903 August 29 04:00 2416355.167 156 Mithuna 10 19:15 104672.802
1905 July 16 02:41 2417042.112 157 Mithuna 11 08:49 105341.368
1907 June 03 02:54 2417729.121 158 Mithuna 10 23:53 106009.995
1909 April 20 03:25 2418416.143 159 Mithuna 11 15:15 106678.636
1911 March 08 02:11 2419103.091 160 Mithuna 11 04:53 107347.204
1913 January 23 01:00 2419790.042 161 Mithuna 10 18:35 108015.775
1914 December 11 00:38 2420477.027 162 Mithuna 10 09:06 108684.379
1916 October 27 23:28 2421163.978 163 Mithuna 10 22:48 109352.950
1918 September 14 22:56 2421850.956 164 Mithuna 10 13:08 110021.548
1920 August 01 23:09 2422537.965 165 Mithuna 11 04:12 110690.175
1922 June 19 22:10 2423224.924 166 Mithuna 10 18:06 111358.754
1924 May 06 21:17 2423911.887 167 Mithuna 11 08:05 112027.337
1926 March 24 21:08 2424598.881 168 Mithuna 10 22:48 112695.950
1928 February 09 20:06 2425285.838 169 Mithuna 11 12:39 113364.527
1929 December 27 19:00 2425972.792 170 Mithuna 11 02:25 114033.101
1931 November 14 19:22 2426659.807 171 Mithuna 10 17:37 114701.735
1933 October 01 18:47 2427346.783 172 Mithuna 10 07:55 115370.330
1935 August 19 17:19 2428033.722 173 Mithuna 10 21:20 116038.890
1937 July 06 16:42 2428720.696 174 Mithuna 10 11:35 116707.483
1939 May 24 16:29 2429407.687 175 Mithuna 11 02:14 117376.093
1941 April 10 15:41 2430094.654 176 Mithuna 10 16:19 118044.680
1943 February 26 15:48 2430781.659 177 Mithuna 11 07:17 118713.304
1945 January 13 15:33 2431468.648 178 Mithuna 10 21:52 119381.912
1946 December 01 14:12 2432155.592 179 Mithuna 11 11:25 120050.476
1948 October 18 13:16 2432842.553 180 Mithuna 11 01:21 120719.057
1950 September 05 12:54 2433529.538 181 Mithuna 10 15:52 121387.661
1952 July 23 11:34 2434216.482 182 Mithuna 10 05:24 122056.225
1954 June 10 11:18 2434903.471 183 Mithuna 10 20:00 122724.834
1956 April 27 12:00 2435590.500 184 Mithuna 10 11:32 123393.481
1958 March 15 11:00 2436277.459 185 Mithuna 11 01:25 124062.060
1960 January 31 09:36 2436964.400 186 Mithuna 10 14:54 124730.621
1961 December 18 09:10 2437651.382 187 Mithuna 11 05:20 125399.222
1963 November 05 08:13 2438338.343 188 Mithuna 10 19:16 126067.803
1965 September 22 07:20 2439025.306 189 Mithuna 11 09:15 126736.386
1967 August 10 07:39 2439712.319 190 Mithuna 11 00:25 127405.017
1969 June 27 06:57 2440399.290 191 Mithuna 10 14:35 128073.608
1971 May 15 05:57 2441086.248 192 Mithuna 10 04:27 128742.186
1973 April 01 05:48 2441773.242 193 Mithuna 10 19:10 129410.799
1975 February 17 05:11 2442460.216 194 Mithuna 10 09:25 130079.393
1977 January 04 03:50 2443147.160 195 Mithuna 10 22:57 130747.957
1978 November 22 04:04 2443834.170 196 Mithuna 10 14:03 131416.585
1980 October 09 03:48 2444521.159 197 Mithuna 11 04:38 132085.194
1982 August 27 02:19 2445208.097 198 Mithuna 10 18:03 132753.752
1984 July 14 01:23 2445895.058 199 Mithuna 11 07:59 133422.333
1986 June 01 01:12 2446582.050 200 Mithuna 10 22:39 134090.944
1988 April 18 00:25 2447269.018 201 Mithuna 11 12:45 134759.532
1990 March 06 00:12 2447956.009 202 Mithuna 11 03:24 135428.142
1992 January 22 00:11 2448643.008 203 Mithuna 11 18:13 136096.760
1993 December 08 22:56 2449329.956 204 Mithuna 11 07:52 136765.328
1995 October 26 21:46 2450016.907 205 Mithuna 11 21:34 137433.899
1997 September 12 21:25 2450703.893 206 Mithuna 11 12:06 138102.504
1999 July 31 20:21 2451390.848 207 Mithuna 12 01:54 138771.079
2001 June 17 19:39 2452077.819 208 Mithuna 11 16:04 139439.670
2003 May 05 20:32 2452764.856 209 Mithuna 12 07:47 140108.325
2005 March 22 20:00 2453451.834 210 Mithuna 11 22:07 140776.922
2007 February 07 18:34 2454138.774 211 Mithuna 11 11:34 141445.483
2008 December 25 18:00 2454825.750 212 Mithuna 11 01:52 142114.078
2010 November 12 17:18 2455512.721 213 Mithuna 11 16:02 142782.669
2012 September 29 16:04 2456199.670 214 Mithuna 11 05:42 143451.238
2014 August 17 16:17 2456886.679 215 Mithuna 11 20:46 144119.865
2016 July 04 15:51 2457573.661 216 Mithuna 11 11:12 144788.467
2018 May 22 14:42 2458260.613 217 Mithuna 12 00:55 145457.039
2020 April 08 14:24 2458947.600 218 Mithuna 11 15:28 146125.645
2022 February 24 13:56 2459634.581 219 Mithuna 12 05:53 146794.245
2024 January 12 12:27 2460321.519 220 Mithuna 11 19:17 147462.804
2025 November 29 12:18 2461008.513 221 Mithuna 11 10:00 148131.417
2027 October 17 12:21 2461695.515 222 Mithuna 11 00:54 148800.038
2029 September 03 11:03 2462382.461 223 Mithuna 11 14:29 149468.604
2031 July 22 09:56 2463069.414 224 Mithuna 11 04:14 150137.177
2033 June 08 09:48 2463756.409 225 Mithuna 11 18:58 150805.791
2035 April 26 09:18 2464443.388 226 Mithuna 11 09:20 151474.389
2037 March 13 08:51 2465130.369 227 Mithuna 11 23:45 152142.990
2039 January 29 09:02 2465817.377 228 Mithuna 11 14:47 152811.616
2040 December 16 08:02 2466504.335 229 Mithuna 12 04:39 153480.194
2042 November 03 06:41 2467191.279 230 Mithuna 11 18:12 154148.759
2044 September 20 06:12 2467878.259 231 Mithuna 11 08:35 154817.358
2046 August 08 05:22 2468565.224 232 Mithuna 10 22:37 155485.943
2048 June 25 04:16 2469252.178 233 Mithuna 11 12:24 156154.517
2050 May 13 05:00 2469939.209 234 Mithuna 11 03:58 156823.166
2052 March 30 04:50 2470626.202 235 Mithuna 11 18:40 157491.778
2054 February 15 03:17 2471313.137 236 Mithuna 11 08:00 158160.333
2056 January 03 02:25 2472000.101 237 Mithuna 11 22:00 158828.917
2057 November 20 01:55 2472687.080 238 Mithuna 11 12:22 159497.516
2059 October 08 00:36 2473374.025 239 Mithuna 12 01:56 160166.081
2061 August 25 00:36 2474061.025 240 Mithuna 11 16:47 160834.700
2063 July 13 00:33 2474748.023 241 Mithuna 11 07:35 161503.317
2065 May 29 23:31 2475434.980 242 Mithuna 10 21:26 162171.894
2067 April 16 23:05 2476121.962 243 Mithuna 11 11:52 162840.495
2069 March 03 22:49 2476808.951 244 Mithuna 11 02:28 163509.103
2071 January 19 21:28 2477495.895 245 Mithuna 11 16:01 164177.667
2072 December 06 20:57 2478182.873 246 Mithuna 11 06:21 164846.265
2074 October 24 21:12 2478869.884 247 Mithuna 11 21:27 165514.894
2076 September 10 20:09 2479556.840 248 Mithuna 11 11:17 166183.470
2078 July 29 18:50 2480243.785 249 Mithuna 12 00:51 166852.036
2080 June 15 18:31 2480930.772 250 Mithuna 11 15:24 167520.642
2082 May 03 18:08 2481617.756 251 Mithuna 11 05:52 168189.245
2084 March 20 17:19 2482304.722 252 Mithuna 10 19:56 168857.831
2086 February 05 17:29 2482991.729 253 Mithuna 11 10:57 169526.456
2087 December 24 16:43 2483678.697 254 Mithuna 11 01:03 170195.044
2089 November 10 15:17 2484365.637 255 Mithuna 11 14:30 170863.605
2091 September 28 14:38 2485052.610 256 Mithuna 11 04:43 171532.197
2093 August 15 14:06 2485739.588 257 Mithuna 11 19:04 172200.795
2095 July 03 12:51 2486426.536 258 Mithuna 11 08:42 172869.363
2097 May 20 13:20 2487113.556 259 Mithuna 12 00:01 173538.001
2099 April 07 13:40 2487800.570 260 Mithuna 11 15:12 174206.634
2101 February 23 12:14 2488487.510 261 Mithuna 11 04:39 174875.194
2103 January 11 11:11 2489174.466 262 Mithuna 10 18:28 175543.770
2104 November 28 10:49 2489861.451 263 Mithuna 11 08:58 176212.374
2106 October 16 09:36 2490548.400 264 Mithuna 10 22:38 176880.943
2108 September 02 09:14 2491235.385 265 Mithuna 11 13:08 177549.548
2110 July 21 09:25 2491922.393 266 Mithuna 11 04:10 178218.174
2112 June 07 08:28 2492609.353 267 Mithuna 11 18:06 178886.754
2114 April 25 07:46 2493296.324 268 Mithuna 11 08:16 179555.345
2116 March 12 07:27 2493983.311 269 Mithuna 11 22:49 180223.951
2118 January 28 06:18 2494670.263 270 Mithuna 11 12:33 180892.523
2119 December 16 05:19 2495357.222 271 Mithuna 11 02:26 181561.102
2121 November 02 05:41 2496044.237 272 Mithuna 10 17:39 182229.735
2123 September 20 04:56 2496731.206 273 Mithuna 11 07:46 182898.324
2125 August 07 03:30 2497418.146 274 Mithuna 10 21:13 183566.885
2127 June 25 03:00 2498105.125 275 Mithuna 11 11:35 184235.483