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

WINTER SOLSTICES OF MARS

Gregorian Date UTC Julian Day Darian Date AMT Julian Sol
1875 November 05 02:36 2406197.109 141 Virgo 14 12:43 94786.530
1877 September 22 01:52 2406884.078 142 Virgo 14 02:51 95455.119
1879 August 10 01:26 2407571.060 143 Virgo 14 17:17 96123.720
1881 June 27 01:10 2408258.049 144 Virgo 14 07:53 96792.329
1883 May 14 23:29 2408944.979 145 Virgo 14 21:06 97460.879
1885 March 31 23:15 2409631.969 146 Virgo 14 11:43 98129.488
1887 February 16 23:22 2410318.974 147 Virgo 15 02:41 98798.112
1889 January 03 22:17 2411005.929 148 Virgo 14 16:29 99466.687
1890 November 21 21:05 2411692.879 149 Virgo 15 06:10 100135.257
1892 October 08 21:17 2412379.887 150 Virgo 14 21:12 100803.884
1894 August 26 20:28 2413066.853 151 Virgo 14 11:16 101472.470
1896 July 13 19:46 2413753.824 152 Virgo 14 01:26 102141.060
1898 May 31 19:58 2414440.832 153 Virgo 14 16:29 102809.687
1900 April 18 19:16 2415127.803 154 Virgo 14 06:39 103478.277
1902 March 06 17:58 2415814.749 155 Virgo 14 20:15 104146.844
1904 January 22 17:41 2416501.737 156 Virgo 14 10:49 104815.451
1905 December 09 16:49 2417188.701 157 Virgo 15 00:49 105484.035
1907 October 27 15:40 2417875.653 158 Virgo 14 14:33 106152.607
1909 September 13 16:30 2418562.688 159 Virgo 15 06:13 106821.260
1911 August 01 16:29 2419249.687 160 Virgo 14 21:03 107489.878
1913 June 18 15:05 2419936.629 161 Virgo 14 10:33 108158.440
1915 May 06 14:19 2420623.597 162 Virgo 14 00:39 108827.028
1917 March 23 13:59 2421310.583 163 Virgo 14 15:11 109495.633
1919 February 08 12:27 2421997.519 164 Virgo 14 04:32 110164.189
1920 December 26 12:18 2422684.513 165 Virgo 14 19:15 110832.802
1922 November 13 12:21 2423371.515 166 Virgo 14 10:09 111501.423
1924 September 30 11:38 2424058.485 167 Virgo 15 00:18 112170.013
1926 August 18 10:59 2424745.458 168 Virgo 14 14:31 112838.605
1928 July 05 10:52 2425432.453 169 Virgo 15 05:15 113507.219
1930 May 23 09:18 2426119.388 170 Virgo 14 18:35 114175.775
1932 April 09 08:41 2426806.362 171 Virgo 14 08:50 114844.368
1934 February 25 09:00 2427493.375 172 Virgo 13 24:59 115513.000
1936 January 13 08:13 2428180.343 173 Virgo 14 14:06 116181.588
1937 November 30 06:53 2428867.287 174 Virgo 14 03:38 116850.152
1939 October 18 06:54 2429554.288 175 Virgo 14 18:31 117518.772
1941 September 04 06:31 2430241.272 176 Virgo 14 08:59 118187.375
1943 July 23 05:29 2430928.229 177 Virgo 14 22:50 118855.952
1945 June 09 05:41 2431615.237 178 Virgo 14 13:53 119524.579
1947 April 27 05:15 2432302.219 179 Virgo 15 04:19 120193.180
1949 March 14 03:59 2432989.166 180 Virgo 14 17:55 120861.747
1951 January 30 03:25 2433676.143 181 Virgo 14 08:14 121530.344
1952 December 17 02:55 2434363.122 182 Virgo 13 23:36 122198.942
1954 November 04 01:26 2435050.060 183 Virgo 14 12:00 122867.500
1956 September 21 01:55 2435737.080 184 Virgo 14 03:19 123536.139
1958 August 09 02:11 2436424.091 185 Virgo 14 18:26 124204.768
1960 June 26 00:56 2437111.039 186 Virgo 14 08:04 124873.337
1962 May 13 23:51 2437797.994 187 Virgo 14 21:52 125541.912
1964 March 30 23:44 2438484.989 188 Virgo 14 12:36 126210.526
1966 February 15 22:16 2439171.928 189 Virgo 15 02:02 126879.085
1968 January 03 21:48 2439858.909 190 Virgo 14 16:26 127547.685
1969 November 20 22:00 2440545.917 191 Virgo 14 07:29 128216.312
1971 October 08 21:28 2441232.895 192 Virgo 13 22:49 128884.909
1973 August 25 20:42 2441919.863 193 Virgo 14 11:55 129553.497
1975 July 13 20:38 2442606.860 194 Virgo 14 02:42 130222.113
1977 May 30 19:26 2443293.810 195 Virgo 14 16:23 130890.683
1979 April 17 18:25 2443980.768 196 Virgo 14 06:16 131559.261
1981 March 04 18:47 2444667.783 197 Virgo 14 21:28 132227.895
1983 January 20 18:18 2445354.763 198 Virgo 14 11:51 132896.494
1984 December 07 16:52 2446041.703 199 Virgo 15 01:18 133565.054
1986 October 25 16:30 2446728.688 200 Virgo 14 15:48 134233.659
1988 September 11 16:26 2447415.685 201 Virgo 15 06:35 134902.275
1990 July 30 15:10 2448102.632 202 Virgo 14 20:12 135570.842
1992 June 16 15:10 2448789.632 203 Virgo 15 11:03 136239.461
1994 May 04 15:00 2449476.625 204 Virgo 15 01:44 136908.073
1996 March 21 13:48 2450163.575 205 Virgo 15 15:25 137576.643
1998 February 06 12:57 2450850.540 206 Virgo 15 05:27 138245.228
1999 December 25 12:44 2451537.531 207 Virgo 15 20:06 138913.838
2001 November 11 11:11 2452224.466 208 Virgo 15 09:26 139582.393
2003 September 29 11:18 2452911.471 209 Virgo 16 00:24 140251.017
2005 August 16 11:55 2453598.497 210 Virgo 15 15:51 140919.661
2007 July 04 10:59 2454285.458 211 Virgo 15 05:48 141588.242
2009 May 21 09:44 2454972.406 212 Virgo 14 19:26 142256.810
2011 April 08 09:40 2455659.403 213 Virgo 15 10:13 142925.426
2013 February 23 08:28 2456346.353 214 Virgo 14 23:54 143593.996
2015 January 11 07:32 2457033.314 215 Virgo 15 13:51 144262.577
2016 November 28 07:45 2457720.323 216 Virgo 15 04:54 144931.205
2018 October 16 07:20 2458407.306 217 Virgo 15 19:22 145599.807
2020 September 02 06:31 2459094.272 218 Virgo 15 09:25 146268.393
2022 July 21 06:15 2459781.261 219 Virgo 16 00:01 146937.001
2024 June 07 05:25 2460468.226 220 Virgo 15 14:03 147605.586
2026 April 25 04:00 2461155.167 221 Virgo 15 03:31 148274.147
2028 March 12 04:13 2461842.176 222 Virgo 14 18:35 148942.775
2030 January 28 04:03 2462529.169 223 Virgo 15 09:16 149611.387
2031 December 16 02:41 2463216.112 224 Virgo 14 22:47 150279.950
2033 November 02 01:59 2463903.083 225 Virgo 15 12:58 150948.541
2035 September 20 02:18 2464590.096 226 Virgo 15 04:07 151617.172
2037 August 07 01:04 2465277.045 227 Virgo 15 17:47 152285.741
2039 June 25 00:53 2465964.037 228 Virgo 15 08:27 152954.352
2041 May 12 00:57 2466651.040 229 Virgo 15 23:22 153622.974
2043 March 29 23:57 2467337.998 230 Virgo 15 13:14 154291.552
2045 February 13 22:50 2468024.952 231 Virgo 15 03:01 154960.126
2047 January 01 22:40 2468711.945 232 Virgo 14 17:42 155628.738
2048 November 18 21:15 2469398.886 233 Virgo 15 07:11 156297.300
2050 October 06 20:49 2470085.868 234 Virgo 14 21:37 156965.901
2052 August 23 21:36 2470772.900 235 Virgo 15 13:13 157634.551
2054 July 11 20:55 2471459.872 236 Virgo 15 03:25 158303.142
2056 May 28 19:29 2472146.812 237 Virgo 15 16:52 158971.703
2058 April 15 19:10 2472833.799 238 Virgo 15 07:24 159640.309
2060 March 02 18:20 2473520.764 239 Virgo 15 21:27 160308.894
2062 January 18 17:02 2474207.710 240 Virgo 15 11:02 160977.460
2063 December 06 17:12 2474894.717 241 Virgo 15 02:03 161646.086
2065 October 23 17:05 2475581.712 242 Virgo 14 16:47 162314.700
2067 September 10 16:24 2476268.684 243 Virgo 15 06:59 162983.291
2069 July 28 16:00 2476955.667 244 Virgo 14 21:26 163651.894
2071 June 15 15:36 2477642.650 245 Virgo 15 11:54 164320.496
2073 May 02 13:59 2478329.583 246 Virgo 15 01:11 164989.049
2075 March 20 13:58 2479016.582 247 Virgo 15 16:00 165657.667
2077 February 04 14:02 2479703.585 248 Virgo 15 06:56 166326.289
2078 December 23 12:50 2480390.535 249 Virgo 15 20:37 166994.859
2080 November 09 11:47 2481077.491 250 Virgo 15 10:26 167663.435
2082 September 27 12:07 2481764.505 251 Virgo 15 01:37 168332.068
2084 August 14 11:03 2482451.461 252 Virgo 14 15:26 169000.644
2086 July 02 10:26 2483138.435 253 Virgo 15 05:41 169669.237
2088 May 19 10:33 2483825.440 254 Virgo 14 20:39 170337.861
2090 April 06 09:44 2484512.406 255 Virgo 15 10:43 171006.447
2092 February 22 08:26 2485199.352 256 Virgo 15 00:18 171675.013
2094 January 09 08:12 2485886.342 257 Virgo 15 14:55 172343.622
2095 November 27 07:10 2486573.299 258 Virgo 15 04:46 173012.199
2097 October 14 06:20 2487260.264 259 Virgo 15 18:48 173680.784
2099 September 01 07:12 2487947.300 260 Virgo 15 10:30 174349.438
2101 July 20 06:57 2488634.290 261 Virgo 15 01:07 175018.047
2103 June 07 05:32 2489321.231 262 Virgo 14 14:35 175686.608
2105 April 24 04:56 2490008.206 263 Virgo 15 04:51 176355.203
2107 March 12 04:30 2490695.188 264 Virgo 14 19:17 177023.804
2109 January 27 03:01 2491382.126 265 Virgo 15 08:42 177692.363
2110 December 15 03:00 2492069.125 266 Virgo 14 23:31 178360.980
2112 November 01 03:04 2492756.128 267 Virgo 15 14:27 179029.602
2114 September 19 02:25 2493443.101 268 Virgo 15 04:40 179698.195
2116 August 06 01:43 2494130.072 269 Virgo 15 18:50 180366.785
2118 June 24 01:29 2494817.062 270 Virgo 15 09:27 181035.394
2120 May 10 23:51 2495503.994 271 Virgo 14 22:43 181703.947
2122 March 28 23:22 2496190.974 272 Virgo 14 13:06 182372.546
2124 February 13 23:36 2496877.984 273 Virgo 15 04:11 183041.175
2125 December 31 22:43 2497564.947 274 Virgo 14 18:11 183709.758
2127 November 18 21:27 2498251.894 275 Virgo 15 07:48 184378.325