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

VERNAL EQUINOXES OF MARS

Gregorian Date UTC Julian Day Darian Date AMT Julian Sol
1874 May 25 16:33 2405668.690 141 Sagittarius 01 05:59 94272.250
1876 April 11 16:19 2406355.680 141 Vrishika 28 20:36 94940.859
1878 February 27 16:04 2407042.670 143 Sagittarius 01 11:13 95609.468
1880 January 15 15:23 2407729.641 144 Sagittarius 01 01:24 96278.058
1881 December 02 14:51 2408416.619 145 Sagittarius 01 15:44 96946.656
1883 October 20 13:52 2409103.578 146 Sagittarius 01 05:38 97615.235
1885 September 06 12:28 2409790.520 147 Sagittarius 01 19:08 98283.797
1887 July 25 12:04 2410477.503 148 Sagittarius 01 09:35 98952.400
1889 June 11 11:45 2411164.490 149 Sagittarius 02 00:08 99621.006
1891 April 29 10:42 2411851.446 150 Sagittarius 01 13:57 100289.582
1893 March 16 09:56 2412538.414 151 Sagittarius 01 04:03 100958.169
1895 February 01 09:46 2413225.407 151 Vrishika 28 18:45 101626.781
1896 December 19 08:28 2413912.353 153 Sagittarius 01 08:20 102295.348
1898 November 06 07:45 2414599.323 153 Vrishika 28 22:29 102963.937
1900 September 24 07:33 2415286.315 155 Sagittarius 01 13:09 103632.548
1902 August 12 06:48 2415973.284 156 Sagittarius 01 03:17 104301.137
1904 June 29 05:54 2416660.246 157 Sagittarius 01 17:15 104969.719
1906 May 17 05:26 2417347.227 158 Sagittarius 01 07:39 105638.319
1908 April 03 04:09 2418034.173 159 Sagittarius 01 21:15 106306.886
1910 February 19 03:31 2418721.147 160 Sagittarius 01 11:29 106975.479
1912 January 07 03:38 2419408.152 161 Sagittarius 01 02:27 107644.103
1913 November 24 03:05 2420095.129 161 Vrishika 28 16:46 108312.699
1915 October 12 01:56 2420782.081 163 Sagittarius 01 06:30 108981.271
1917 August 29 01:23 2421469.058 163 Vrishika 28 20:49 109649.868
1919 July 17 00:24 2422156.017 165 Sagittarius 01 10:43 110318.447
1921 June 02 23:06 2422842.963 166 Sagittarius 01 00:18 110987.013
1923 April 20 22:42 2423529.946 167 Sagittarius 01 14:45 111655.615
1925 March 07 22:27 2424216.936 168 Sagittarius 01 05:23 112324.224
1927 January 23 21:51 2424903.911 169 Sagittarius 01 19:39 112992.819
1928 December 10 21:11 2425590.883 170 Sagittarius 01 09:51 113661.410
1930 October 28 20:25 2426277.851 170 Vrishika 28 23:57 114329.998
1932 September 14 18:59 2426964.791 171 Vrishika 28 13:24 114998.559
1934 August 02 18:24 2427651.767 173 Sagittarius 01 03:41 115667.154
1936 June 19 18:15 2428338.761 173 Vrishika 28 18:24 116335.767
1938 May 07 17:26 2429025.727 175 Sagittarius 01 08:27 117004.353
1940 March 24 16:32 2429712.689 175 Vrishika 28 22:25 117672.935
1942 February 09 16:32 2430399.689 177 Sagittarius 01 13:16 118341.553
1943 December 28 15:23 2431086.641 178 Sagittarius 01 03:00 119010.126
1945 November 14 14:24 2431773.600 179 Sagittarius 01 16:54 119678.704
1947 October 02 14:11 2432460.591 180 Sagittarius 01 07:32 120347.315
1949 August 19 13:35 2433147.566 180 Vrishika 28 21:49 121015.909
1951 July 07 12:34 2433834.524 181 Vrishika 28 11:41 121684.487
1953 May 24 12:05 2434521.504 183 Sagittarius 01 02:04 122353.086
1955 April 11 10:56 2435208.456 183 Vrishika 28 15:48 123021.659
1957 February 26 09:56 2435895.414 185 Sagittarius 01 05:40 123690.236
1959 January 14 09:57 2436582.415 185 Vrishika 28 20:33 124358.856
1960 December 01 09:33 2437269.398 187 Sagittarius 01 11:00 125027.459
1962 October 19 08:25 2437956.351 188 Sagittarius 01 00:45 125696.032
1964 September 05 07:45 2438643.323 189 Sagittarius 01 14:57 126364.623
1966 July 24 07:01 2439330.293 190 Sagittarius 01 05:06 127033.213
1968 June 10 05:41 2440017.237 190 Vrishika 28 18:39 127701.777
1970 April 28 05:09 2440704.215 191 Vrishika 28 08:59 128370.375
1972 March 15 05:00 2441391.209 192 Vrishika 28 23:42 129038.988
1974 January 31 04:35 2442078.191 193 Vrishika 28 14:08 129707.589
1975 December 19 03:48 2442765.159 195 Sagittarius 01 04:14 130376.177
1977 November 05 03:14 2443452.135 195 Vrishika 28 18:31 131044.772
1979 September 23 01:49 2444139.076 197 Sagittarius 01 08:00 131713.333
1981 August 10 01:01 2444826.043 197 Vrishika 28 22:05 132381.920
1983 June 28 00:56 2445513.039 199 Sagittarius 01 12:50 133050.535
1985 May 15 00:15 2446200.011 200 Sagittarius 01 03:02 133719.127
1987 April 01 23:09 2446886.965 201 Sagittarius 01 16:49 134387.701
1989 February 16 23:00 2447573.959 202 Sagittarius 01 07:31 135056.314
1991 January 04 22:04 2448260.920 203 Sagittarius 01 21:28 135724.895
1992 November 21 20:49 2448947.868 204 Sagittarius 01 11:06 136393.463
1994 October 09 20:29 2449634.854 205 Sagittarius 02 01:38 137062.068
1996 August 26 20:03 2450321.836 206 Sagittarius 01 16:03 137730.669
1998 July 14 19:04 2451008.795 207 Sagittarius 02 05:57 138399.248
2000 May 31 18:33 2451695.773 208 Sagittarius 01 20:17 139067.846
2002 April 18 17:41 2452382.737 209 Sagittarius 02 10:18 139736.430
2004 March 05 16:27 2453069.686 210 Sagittarius 01 23:58 140404.999
2006 January 21 16:24 2453756.684 211 Sagittarius 01 14:46 141073.616
2007 December 09 16:13 2454443.676 212 Sagittarius 01 05:26 141742.227
2009 October 26 15:14 2455130.635 213 Sagittarius 01 19:20 142410.806
2011 September 13 14:25 2455817.601 214 Sagittarius 01 09:23 143079.391
2013 July 31 13:55 2456504.580 215 Sagittarius 01 23:45 143747.990
2015 June 18 12:34 2457191.524 216 Sagittarius 01 13:17 144416.554
2017 May 05 11:45 2457878.490 217 Sagittarius 02 03:21 145085.140
2019 March 23 11:32 2458565.481 218 Sagittarius 01 17:59 145753.750
2021 February 07 11:12 2459252.467 219 Sagittarius 02 08:31 146422.355
2022 December 26 10:19 2459939.430 220 Sagittarius 01 22:30 147090.938
2024 November 12 09:46 2460626.407 221 Sagittarius 01 12:49 147759.534
2026 September 30 08:29 2461313.354 222 Sagittarius 01 02:26 148428.102
2028 August 17 07:24 2462000.309 223 Sagittarius 01 16:14 149096.677
2030 July 05 07:17 2462687.304 224 Sagittarius 01 06:58 149765.291
2032 May 22 06:50 2463374.285 225 Sagittarius 01 21:22 150433.891
2034 April 09 05:44 2464061.239 226 Sagittarius 01 11:09 151102.465
2036 February 25 05:26 2464748.227 227 Sagittarius 02 01:43 151771.072
2038 January 12 04:52 2465435.203 228 Sagittarius 01 16:01 152439.668
2039 November 30 03:33 2466122.148 229 Sagittarius 02 05:35 153108.233
2041 October 17 03:08 2466809.131 230 Sagittarius 01 20:02 153776.835
2043 September 04 02:54 2467496.121 231 Sagittarius 01 10:39 154445.444
2045 July 22 01:58 2468183.082 232 Sagittarius 01 00:36 155114.025
2047 June 09 01:14 2468870.052 233 Sagittarius 01 14:45 155782.615
2049 April 26 00:34 2469557.024 234 Sagittarius 01 04:57 156451.206
2051 March 13 23:08 2470243.964 235 Sagittarius 01 18:24 157119.767
2053 January 28 22:50 2470930.952 236 Sagittarius 01 08:58 157788.374
2054 December 16 22:45 2471617.948 237 Sagittarius 01 23:44 158456.989
2056 November 02 21:51 2472304.911 238 Sagittarius 01 13:43 159125.572
2058 September 20 20:51 2472991.869 239 Sagittarius 02 03:35 159794.150
2060 August 07 20:25 2473678.851 240 Sagittarius 01 18:01 160462.751
2062 June 25 19:10 2474365.799 241 Sagittarius 01 07:39 161131.319
2064 May 12 18:10 2475052.757 241 Vrishika 28 21:32 161799.897
2066 March 30 17:55 2475739.747 243 Sagittarius 01 12:09 162468.506
2068 February 15 17:48 2476426.742 244 Sagittarius 01 02:53 163137.120
2070 January 02 17:00 2477113.709 245 Sagittarius 01 16:58 163805.707
2071 November 20 16:30 2477800.688 246 Sagittarius 01 07:19 164474.305
2073 October 07 15:30 2478487.646 247 Sagittarius 01 21:12 165142.883
2075 August 25 14:15 2479174.594 248 Sagittarius 01 10:50 165811.452
2077 July 12 13:59 2479861.583 249 Sagittarius 02 01:26 166480.060
2079 May 30 13:40 2480548.570 250 Sagittarius 01 15:58 167148.666
2081 April 16 12:34 2481235.524 251 Sagittarius 01 05:45 167817.240
2083 March 04 12:00 2481922.500 251 Vrishika 28 20:03 168485.835
2085 January 19 11:39 2482609.486 253 Sagittarius 01 10:34 169154.441
2086 December 07 10:14 2483296.427 254 Sagittarius 01 00:02 169823.002
2088 October 24 09:34 2483983.399 255 Sagittarius 01 14:14 170491.594
2090 September 11 09:21 2484670.390 256 Sagittarius 01 04:53 171160.204
2092 July 29 08:29 2485357.354 257 Sagittarius 01 18:54 171828.788
2094 June 16 07:36 2486044.317 258 Sagittarius 01 08:53 172497.370
2096 May 03 07:04 2486731.295 259 Sagittarius 01 23:13 173165.968
2098 March 21 05:44 2487418.239 260 Sagittarius 01 12:46 173834.532
2100 February 06 05:18 2488105.221 261 Sagittarius 01 03:12 174503.133
2101 December 25 05:21 2488792.223 261 Vrishika 28 18:06 175171.754
2103 November 12 04:43 2489479.197 263 Sagittarius 01 08:20 175840.348
2105 September 29 03:40 2490166.153 263 Vrishika 28 22:10 176508.924
2107 August 17 03:14 2490853.135 265 Sagittarius 01 12:36 177177.525
2109 July 04 02:12 2491540.092 266 Sagittarius 01 02:26 177846.102
2111 May 22 00:59 2492227.041 267 Sagittarius 01 16:06 178514.671
2113 April 08 00:38 2492914.027 268 Sagittarius 01 06:38 179183.276
2115 February 24 00:34 2493601.024 269 Sagittarius 01 21:24 179851.892
2117 January 10 23:48 2494287.992 270 Sagittarius 01 11:31 180520.480
2118 November 28 23:06 2494974.963 271 Sagittarius 01 01:41 181189.071
2120 October 15 22:16 2495661.928 271 Vrishika 28 15:43 181857.655
2122 September 02 20:47 2496348.866 273 Sagittarius 01 05:08 182526.214
2124 July 20 20:16 2497035.845 273 Vrishika 28 19:29 183194.812
2126 June 07 20:05 2497722.837 275 Sagittarius 01 10:09 183863.423