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
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THE DARIAN SYSTEM
Copyright © 1986-2005 by Thomas Gangale
PERIHELIONS OF MARS
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Gregorian Date | | UTC | | Julian Day | | Darian Date | | AMT | | Julian Sol |
1875 October 04 | | 21:07 | | 2406165.880 | | 141 Simha 11 | | 03:17 | | 94756.137 |
1877 August 21 | | 17:31 | | 2406852.730 | | 142 Simha 10 | | 15:38 | | 95424.610 |
1879 July 09 | | 19:12 | | 2407539.800 | | 143 Simha 11 | | 07:07 | | 96093.297 |
1881 May 26 | | 20:38 | | 2408226.860 | | 144 Simha 10 | | 24:22 | | 96761.974 |
1883 April 13 | | 14:38 | | 2408913.610 | | 145 Simha 11 | | 08:23 | | 97430.350 |
1885 February 28 | | 18:00 | | 2409600.750 | | 146 Simha 11 | | 02:30 | | 98099.105 |
1887 January 16 | | 21:21 | | 2410287.890 | | 147 Simha 11 | | 20:38 | | 98767.860 |
1888 December 03 | | 17:31 | | 2410974.730 | | 148 Simha 11 | | 07:44 | | 99436.323 |
1890 October 21 | | 15:50 | | 2411661.660 | | 149 Simha 11 | | 20:57 | | 100104.874 |
1892 September 07 | | 20:24 | | 2412348.850 | | 150 Simha 11 | | 16:15 | | 100773.677 |
1894 July 26 | | 16:04 | | 2413035.670 | | 151 Simha 11 | | 02:54 | | 101442.121 |
1896 June 12 | | 16:33 | | 2413722.690 | | 152 Simha 10 | | 19:13 | | 102110.759 |
1898 April 30 | | 21:07 | | 2414409.880 | | 153 Simha 11 | | 13:30 | | 102779.563 |
1900 March 18 | | 19:12 | | 2415096.800 | | 154 Simha 11 | | 02:29 | | 103448.104 |
1902 February 03 | | 15:07 | | 2415783.630 | | 155 Simha 11 | | 13:22 | | 104116.557 |
1903 December 22 | | 18:43 | | 2416470.780 | | 156 Simha 11 | | 07:43 | | 104785.322 |
1905 November 08 | | 15:50 | | 2417157.660 | | 157 Simha 11 | | 19:46 | | 105453.824 |
1907 September 26 | | 13:12 | | 2417844.550 | | 158 Simha 11 | | 08:03 | | 106122.336 |
1909 August 13 | | 19:26 | | 2418531.810 | | 159 Simha 12 | | 04:59 | | 106791.208 |
1911 July 01 | | 20:24 | | 2419218.850 | | 160 Simha 11 | | 20:46 | | 107459.866 |
1913 May 18 | | 15:21 | | 2419905.640 | | 161 Simha 11 | | 06:43 | | 108128.280 |
1915 April 05 | | 16:48 | | 2420592.700 | | 162 Simha 10 | | 23:58 | | 108796.957 |
1917 February 20 | | 17:31 | | 2421279.730 | | 163 Simha 11 | | 14:31 | | 109465.605 |
1919 January 08 | | 12:14 | | 2421966.510 | | 164 Simha 11 | | 00:14 | | 110134.010 |
1920 November 25 | | 16:19 | | 2422653.680 | | 165 Simha 11 | | 19:03 | | 110802.794 |
1922 October 13 | | 19:12 | | 2423340.800 | | 166 Simha 11 | | 12:43 | | 111471.530 |
1924 August 30 | | 16:04 | | 2424027.670 | | 167 Simha 12 | | 00:32 | | 112140.022 |
1926 July 18 | | 15:36 | | 2424714.650 | | 168 Simha 11 | | 14:55 | | 112808.622 |
1928 June 04 | | 18:43 | | 2425401.780 | | 169 Simha 12 | | 08:48 | | 113477.367 |
1930 April 22 | | 12:57 | | 2426088.540 | | 170 Simha 11 | | 18:03 | | 114145.752 |
1932 March 09 | | 14:09 | | 2426775.590 | | 171 Simha 11 | | 10:04 | | 114814.420 |
1934 January 25 | | 18:43 | | 2427462.780 | | 172 Simha 11 | | 05:21 | | 115483.224 |
1935 December 13 | | 16:33 | | 2428149.690 | | 173 Simha 11 | | 18:06 | | 116151.755 |
1937 October 30 | | 12:43 | | 2428836.530 | | 174 Simha 11 | | 05:13 | | 116820.218 |
1939 September 17 | | 17:02 | | 2429523.710 | | 175 Simha 12 | | 00:17 | | 117489.012 |
1941 August 04 | | 14:24 | | 2430210.600 | | 176 Simha 11 | | 12:34 | | 118157.524 |
1943 June 22 | | 12:28 | | 2430897.520 | | 177 Simha 12 | | 01:33 | | 118826.065 |
1945 May 09 | | 17:16 | | 2431584.720 | | 178 Simha 11 | | 21:04 | | 119494.878 |
1947 March 27 | | 17:16 | | 2432271.720 | | 179 Simha 12 | | 11:55 | | 120163.497 |
1949 February 11 | | 12:43 | | 2432958.530 | | 180 Simha 11 | | 22:20 | | 120831.931 |
1950 December 30 | | 15:21 | | 2433645.640 | | 181 Simha 11 | | 15:45 | | 121500.657 |
1952 November 16 | | 14:52 | | 2434332.620 | | 182 Simha 11 | | 06:08 | | 122169.256 |
1954 October 04 | | 10:19 | | 2435019.430 | | 183 Simha 11 | | 16:33 | | 122837.690 |
1956 August 21 | | 15:36 | | 2435706.650 | | 184 Simha 11 | | 12:33 | | 123506.523 |
1958 July 09 | | 18:14 | | 2436393.760 | | 185 Simha 12 | | 05:58 | | 124175.249 |
1960 May 26 | | 13:55 | | 2437080.580 | | 186 Simha 11 | | 16:37 | | 124843.693 |
1962 April 13 | | 13:12 | | 2437767.550 | | 187 Simha 12 | | 06:46 | | 125512.282 |
1964 February 29 | | 16:04 | | 2438454.670 | | 188 Simha 12 | | 00:25 | | 126181.018 |
1966 January 16 | | 10:33 | | 2439141.440 | | 189 Simha 12 | | 09:54 | | 126849.413 |
1967 December 04 | | 12:28 | | 2439828.520 | | 190 Simha 12 | | 02:37 | | 127518.109 |
1969 October 21 | | 16:19 | | 2440515.680 | | 191 Simha 11 | | 21:12 | | 128186.884 |
1971 September 08 | | 14:09 | | 2441202.590 | | 192 Simha 11 | | 09:57 | | 128855.415 |
1973 July 26 | | 11:45 | | 2441889.490 | | 193 Simha 11 | | 22:28 | | 129523.937 |
1975 June 13 | | 15:50 | | 2442576.660 | | 194 Simha 11 | | 17:18 | | 130192.721 |
1977 April 30 | | 11:31 | | 2443263.480 | | 195 Simha 12 | | 03:57 | | 130861.165 |
1979 March 18 | | 10:19 | | 2443950.430 | | 196 Simha 11 | | 17:38 | | 131529.735 |
1981 February 02 | | 15:36 | | 2444637.650 | | 197 Simha 12 | | 13:37 | | 132198.568 |
1982 December 21 | | 15:07 | | 2445324.630 | | 198 Simha 12 | | 04:00 | | 132867.167 |
1984 November 07 | | 10:19 | | 2446011.430 | | 199 Simha 12 | | 14:11 | | 133535.591 |
1986 September 25 | | 13:26 | | 2446698.560 | | 200 Simha 12 | | 08:04 | | 134204.337 |
1988 August 12 | | 13:12 | | 2447385.550 | | 201 Simha 12 | | 22:41 | | 134872.946 |
1990 June 30 | | 09:21 | | 2448072.390 | | 202 Simha 12 | | 09:48 | | 135541.409 |
1992 May 17 | | 14:09 | | 2448759.590 | | 203 Simha 13 | | 05:20 | | 136210.222 |
1994 April 04 | | 15:36 | | 2449446.650 | | 204 Simha 12 | | 21:35 | | 136878.900 |
1996 February 20 | | 11:16 | | 2450133.470 | | 205 Simha 13 | | 08:14 | | 137547.343 |
1998 January 07 | | 11:31 | | 2450820.480 | | 206 Simha 12 | | 23:19 | | 138215.972 |
1999 November 25 | | 13:26 | | 2451507.560 | | 207 Simha 13 | | 16:02 | | 138884.669 |
2001 October 12 | | 07:40 | | 2452194.320 | | 208 Simha 13 | | 01:17 | | 139553.054 |
2003 August 30 | | 11:02 | | 2452881.460 | | 209 Simha 13 | | 19:24 | | 140221.809 |
2005 July 17 | | 15:36 | | 2453568.650 | | 210 Simha 13 | | 14:42 | | 140890.613 |
2007 June 04 | | 12:28 | | 2454255.520 | | 211 Simha 13 | | 02:31 | | 141559.105 |
2009 April 21 | | 09:50 | | 2454942.410 | | 212 Simha 12 | | 14:48 | | 142227.617 |
2011 March 09 | | 13:55 | | 2455629.580 | | 213 Simha 13 | | 09:37 | | 142896.401 |
2013 January 24 | | 09:07 | | 2456316.380 | | 214 Simha 12 | | 19:48 | | 143564.825 |
2014 December 12 | | 08:24 | | 2457003.350 | | 215 Simha 13 | | 09:57 | | 144233.415 |
2016 October 29 | | 13:12 | | 2457690.550 | | 216 Simha 13 | | 05:28 | | 144902.228 |
2018 September 16 | | 12:43 | | 2458377.530 | | 217 Simha 13 | | 19:51 | | 145570.828 |
2020 August 03 | | 09:07 | | 2459064.380 | | 218 Simha 13 | | 07:12 | | 146239.301 |
2022 June 21 | | 12:57 | | 2459751.540 | | 219 Simha 14 | | 01:48 | | 146908.075 |
2024 May 08 | | 10:48 | | 2460438.450 | | 220 Simha 13 | | 14:33 | | 147576.606 |
2026 March 26 | | 07:12 | | 2461125.300 | | 221 Simha 13 | | 01:53 | | 148245.079 |
2028 February 11 | | 12:14 | | 2461812.510 | | 222 Simha 12 | | 21:39 | | 148913.902 |
2029 December 29 | | 13:12 | | 2462499.550 | | 223 Simha 13 | | 13:26 | | 149582.560 |
2031 November 16 | | 08:09 | | 2463186.340 | | 224 Simha 12 | | 23:23 | | 150250.975 |
2033 October 03 | | 09:21 | | 2463873.390 | | 225 Simha 13 | | 15:24 | | 150919.642 |
2035 August 21 | | 11:45 | | 2464560.490 | | 226 Simha 13 | | 08:35 | | 151588.358 |
2037 July 08 | | 06:43 | | 2465247.280 | | 227 Simha 13 | | 18:32 | | 152256.773 |
2039 May 26 | | 10:19 | | 2465934.430 | | 228 Simha 13 | | 12:53 | | 152925.537 |
2041 April 12 | | 13:26 | | 2466621.560 | | 229 Simha 14 | | 06:47 | | 153594.283 |
2043 February 28 | | 09:50 | | 2467308.410 | | 230 Simha 13 | | 18:08 | | 154262.756 |
2045 January 15 | | 07:55 | | 2467995.330 | | 231 Simha 13 | | 07:07 | | 154931.297 |
2046 December 03 | | 11:16 | | 2468682.470 | | 232 Simha 13 | | 01:14 | | 155600.052 |
2048 October 20 | | 06:00 | | 2469369.250 | | 233 Simha 13 | | 10:57 | | 156268.456 |
2050 September 07 | | 07:12 | | 2470056.300 | | 234 Simha 13 | | 02:58 | | 156937.124 |
2052 July 25 | | 12:43 | | 2470743.530 | | 235 Simha 13 | | 23:11 | | 157605.967 |
2054 June 12 | | 11:16 | | 2471430.470 | | 236 Simha 13 | | 12:38 | | 158274.527 |
2056 April 29 | | 07:12 | | 2472117.300 | | 237 Simha 13 | | 23:31 | | 158942.980 |
2058 March 17 | | 10:48 | | 2472804.450 | | 238 Simha 13 | | 17:53 | | 159611.745 |
2060 February 02 | | 07:55 | | 2473491.330 | | 239 Simha 14 | | 05:56 | | 160280.247 |
2061 December 20 | | 04:48 | | 2474178.200 | | 240 Simha 13 | | 17:45 | | 160948.740 |
2063 November 07 | | 09:50 | | 2474865.410 | | 241 Simha 13 | | 13:30 | | 161617.563 |
2065 September 24 | | 10:48 | | 2475552.450 | | 242 Simha 13 | | 05:17 | | 162286.221 |
2067 August 12 | | 07:12 | | 2476239.300 | | 243 Simha 13 | | 16:38 | | 162954.693 |
2069 June 29 | | 09:21 | | 2476926.390 | | 244 Simha 13 | | 09:35 | | 163623.400 |
2071 May 17 | | 09:50 | | 2477613.410 | | 245 Simha 14 | | 00:54 | | 164292.038 |
2073 April 03 | | 04:19 | | 2478300.180 | | 246 Simha 13 | | 10:23 | | 164960.433 |
2075 February 19 | | 08:24 | | 2478987.350 | | 247 Simha 14 | | 05:13 | | 165629.217 |
2077 January 06 | | 10:48 | | 2479674.450 | | 248 Simha 13 | | 22:24 | | 166297.934 |
2078 November 24 | | 06:43 | | 2480361.280 | | 249 Simha 14 | | 09:17 | | 166966.387 |
2080 October 11 | | 05:45 | | 2481048.240 | | 250 Simha 13 | | 23:12 | | 167634.967 |
2082 August 29 | | 09:50 | | 2481735.410 | | 251 Simha 13 | | 18:01 | | 168303.751 |
2084 July 16 | | 05:02 | | 2482422.210 | | 252 Simha 13 | | 04:12 | | 168972.175 |
2086 June 03 | | 06:28 | | 2483109.270 | | 253 Simha 13 | | 20:27 | | 169640.853 |
2088 April 20 | | 10:33 | | 2483796.440 | | 254 Simha 13 | | 15:17 | | 170309.637 |
2090 March 08 | | 08:24 | | 2484483.350 | | 255 Simha 14 | | 04:02 | | 170978.168 |
2092 January 24 | | 04:48 | | 2485170.200 | | 256 Simha 13 | | 15:22 | | 171646.641 |
2093 December 11 | | 08:24 | | 2485857.350 | | 257 Simha 14 | | 09:44 | | 172315.406 |
2095 October 29 | | 04:48 | | 2486544.200 | | 258 Simha 13 | | 21:05 | | 172983.879 |
2097 September 15 | | 03:36 | | 2487231.150 | | 259 Simha 14 | | 10:46 | | 173652.449 |
2099 August 03 | | 09:36 | | 2487918.400 | | 260 Simha 14 | | 07:27 | | 174321.311 |
2101 June 21 | | 09:50 | | 2488605.410 | | 261 Simha 13 | | 22:32 | | 174989.939 |
2103 May 09 | | 05:02 | | 2489292.210 | | 262 Simha 13 | | 08:43 | | 175658.364 |
2105 March 26 | | 06:57 | | 2489979.290 | | 263 Simha 14 | | 01:26 | | 176327.060 |
2107 February 11 | | 06:43 | | 2490666.280 | | 264 Simha 13 | | 16:04 | | 176995.669 |
2108 December 29 | | 01:55 | | 2491353.080 | | 265 Simha 14 | | 02:14 | | 177664.094 |
2110 November 16 | | 06:14 | | 2492040.260 | | 266 Simha 13 | | 21:18 | | 178332.888 |
2112 October 03 | | 08:38 | | 2492727.360 | | 267 Simha 14 | | 14:29 | | 179001.604 |
2114 August 21 | | 05:31 | | 2493414.230 | | 268 Simha 14 | | 02:18 | | 179670.096 |
2116 July 08 | | 05:31 | | 2494101.230 | | 269 Simha 14 | | 17:09 | | 180338.715 |
2118 May 26 | | 08:09 | | 2494788.340 | | 270 Simha 14 | | 10:34 | | 181007.441 |
2120 April 12 | | 02:09 | | 2495475.090 | | 271 Simha 13 | | 19:35 | | 181675.816 |
2122 February 28 | | 04:19 | | 2496162.180 | | 272 Simha 13 | | 12:32 | | 182344.523 |
2124 January 16 | | 08:24 | | 2496849.350 | | 273 Simha 14 | | 07:22 | | 183013.307 |
2125 December 03 | | 05:45 | | 2497536.240 | | 274 Simha 13 | | 19:39 | | 183681.819 |
2127 October 21 | | 02:38 | | 2498223.110 | | 275 Simha 14 | | 07:28 | | 184350.311 |
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