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

PERIHELIONS OF MARS

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