Understanding >Astronomical calculations
2028.-CALENDAR-. JANUARY FEBRUARY MARCH ------------------------------ ------------------------------ ------------------------------ DAY DAY & NO DAY DAY & NO DAY DAY & NO ------------------- --------- ------------------- --------- ------------------- --------- OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK A 12H TU A 12H TU A 12H TU ------------------- --------- ------------------- --------- ------------------- --------- 246 246 246 1 1 1772 SAT. 1 32 1803 TUE. 1 61 1832 WED. 2 2 1773 SUN. ---- 2 33 1804 WED. 2 62 1833 THU. 9 ! 3 3 1774 MON. ---- 3 34 1805 THU. 5 ! 3 63 1834 FRI. 4 4 1775 TUE. 4 35 1806 FRI. 4 64 1835 SAT. 5 5 1776 WED. 5 36 1807 SAT. 5 65 1836 SUN. ---- 6 6 1777 THU. 1 ! 6 37 1808 SUN. ---- 6 66 1837 MON. ---- 7 7 1778 FRI. 7 38 1809 MON. ---- 7 67 1838 TUE. 8 8 1779 SAT. 8 39 1810 TUE. 8 68 1839 WED. 9 9 1780 SUN. ---- 9 40 1811 WED. 9 69 1840 THU. 10 ! 10 10 1781 MON. ---- 10 41 1812 THU. 6 ! 10 70 1841 FRI. 11 11 1782 TUE. 11 42 1813 FRI. 11 71 1842 SAT. 12 12 1783 WED. 12 43 1814 SAT. 12 72 1843 SUN. ---- 13 13 1784 THU. 2 ! 13 44 1815 SUN. ---- 13 73 1844 MON. ---- 14 14 1785 FRI. 14 45 1816 MON. ---- 14 74 1845 TUE. 15 15 1786 SAT. 15 46 1817 TUE. 15 75 1846 WED. 16 16 1787 SUN. ---- 16 47 1818 WED. 16 76 1847 THU. 11 ! 17 17 1788 MON. ---- 17 48 1819 THU. 7 ! 17 77 1848 FRI. 18 18 1789 TUE. 18 49 1820 FRI. 18 78 1849 SAT. 19 19 1790 WED. 19 50 1821 SAT. 19 79 1850 SUN. ---- 20 20 1791 THU. 3 ! 20 51 1822 SUN. ---- 20 80 1851 MON. ---- 21 21 1792 FRI. 21 52 1823 MON. ---- 21 81 1852 TUE. 22 22 1793 SAT. 22 53 1824 TUE. 22 82 1853 WED. 23 23 1794 SUN. ---- 23 54 1825 WED. 23 83 1854 THU. 12 ! 24 24 1795 MON. ---- 24 55 1826 THU. 8 ! 24 84 1855 FRI. 25 25 1796 TUE. 25 56 1827 FRI. 25 85 1856 SAT. 26 26 1797 WED. 26 57 1828 SAT. 26 86 1857 SUN. ---- 27 27 1798 THU. 4 ! 27 58 1829 SUN. ---- 27 87 1858 MON. ---- 28 28 1799 FRI. 28 59 1830 MON. ---- 28 88 1859 TUE. 29 29 1800 SAT. 29 60 1831 TUE. 29 89 1860 WED. 30 30 1801 SUN. ---- 30 90 1861 THU. 13 ! 31 31 1802 MON. ---- 31 91 1862 FRI. ------------------------------ ------------------------------ ------------------------------ 2028.-CALENDAR-. APRIL MAY JUNE ------------------------------ ------------------------------ ------------------------------ DAY DAY & NO DAY DAY & NO DAY DAY & NO ------------------- --------- ------------------- --------- ------------------- --------- OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK A 12H TU A 12H TU A 12H TU ------------------- --------- ------------------- --------- ------------------- --------- 246 246 246 1 92 1863 SAT. 1 122 1893 MON. ---- 1 153 1924 THU. 22 ! 2 93 1864 SUN. ---- 2 123 1894 TUE. 2 154 1925 FRI. 3 94 1865 MON. ---- 3 124 1895 WED. 3 155 1926 SAT. 4 95 1866 TUE. 4 125 1896 THU. 18 ! 4 156 1927 SUN. ---- 5 96 1867 WED. 5 126 1897 FRI. 5 157 1928 MON. ---- 6 97 1868 THU. 14 ! 6 127 1898 SAT. 6 158 1929 TUE. 7 98 1869 FRI. 7 128 1899 SUN. ---- 7 159 1930 WED. 8 99 1870 SAT. 8 129 1900 MON. ---- 8 160 1931 THU. 23 ! 9 100 1871 SUN. ---- 9 130 1901 TUE. 9 161 1932 FRI. 10 101 1872 MON. ---- 10 131 1902 WED. 10 162 1933 SAT. 11 102 1873 TUE. 11 132 1903 THU. 19 ! 11 163 1934 SUN. ---- 12 103 1874 WED. 12 133 1904 FRI. 12 164 1935 MON. ---- 13 104 1875 THU. 15 ! 13 134 1905 SAT. 13 165 1936 TUE. 14 105 1876 FRI. 14 135 1906 SUN. ---- 14 166 1937 WED. 15 106 1877 SAT. 15 136 1907 MON. ---- 15 167 1938 THU. 24 ! 16 107 1878 SUN. ---- 16 137 1908 TUE. 16 168 1939 FRI. 17 108 1879 MON. ---- 17 138 1909 WED. 17 169 1940 SAT. 18 109 1880 TUE. 18 139 1910 THU. 20 ! 18 170 1941 SUN. ---- 19 110 1881 WED. 19 140 1911 FRI. 19 171 1942 MON. ---- 20 111 1882 THU. 16 ! 20 141 1912 SAT. 20 172 1943 TUE. 21 112 1883 FRI. 21 142 1913 SUN. ---- 21 173 1944 WED. 22 113 1884 SAT. 22 143 1914 MON. ---- 22 174 1945 THU. 25 ! 23 114 1885 SUN. ---- 23 144 1915 TUE. 23 175 1946 FRI. 24 115 1886 MON. ---- 24 145 1916 WED. 24 176 1947 SAT. 25 116 1887 TUE. 25 146 1917 THU. 21 ! 25 177 1948 SUN. ---- 26 117 1888 WED. 26 147 1918 FRI. 26 178 1949 MON. ---- 27 118 1889 THU. 17 ! 27 148 1919 SAT. 27 179 1950 TUE. 28 119 1890 FRI. 28 149 1920 SUN. ---- 28 180 1951 WED. 29 120 1891 SAT. 29 150 1921 MON. ---- 29 181 1952 THU. 26 ! 30 121 1892 SUN. ---- 30 151 1922 TUE. 30 182 1953 FRI. 31 152 1923 WED. ------------------------------ ------------------------------ ------------------------------ 2028.-CALENDAR-. JULY AUGUST SEPTEMBER ------------------------------ ------------------------------ ------------------------------ DAY DAY & NO DAY DAY & NO DAY DAY & NO ------------------- --------- ------------------- --------- ------------------- --------- OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK A 12H TU A 12H TU A 12H TU ------------------- --------- ------------------- --------- ------------------- --------- 246 246 246 1 183 1954 SAT. 1 214 1985 TUE. 1 245 2016 FRI. 2 184 1955 SUN. ---- 2 215 1986 WED. 2 246 2017 SAT. 3 185 1956 MON. ---- 3 216 1987 THU. 31 ! 3 247 2018 SUN. ---- 4 186 1957 TUE. 4 217 1988 FRI. 4 248 2019 MON. ---- 5 187 1958 WED. 5 218 1989 SAT. 5 249 2020 TUE. 6 188 1959 THU. 27 ! 6 219 1990 SUN. ---- 6 250 2021 WED. 7 189 1960 FRI. 7 220 1991 MON. ---- 7 251 2022 THU. 36 ! 8 190 1961 SAT. 8 221 1992 TUE. 8 252 2023 FRI. 9 191 1962 SUN. ---- 9 222 1993 WED. 9 253 2024 SAT. 10 192 1963 MON. ---- 10 223 1994 THU. 32 ! 10 254 2025 SUN. ---- 11 193 1964 TUE. 11 224 1995 FRI. 11 255 2026 MON. ---- 12 194 1965 WED. 12 225 1996 SAT. 12 256 2027 TUE. 13 195 1966 THU. 28 ! 13 226 1997 SUN. ---- 13 257 2028 WED. 14 196 1967 FRI. 14 227 1998 MON. ---- 14 258 2029 THU. 37 ! 15 197 1968 SAT. 15 228 1999 TUE. 15 259 2030 FRI. 16 198 1969 SUN. ---- 16 229 2000 WED. 16 260 2031 SAT. 17 199 1970 MON. ---- 17 230 2001 THU. 33 ! 17 261 2032 SUN. ---- 18 200 1971 TUE. 18 231 2002 FRI. 18 262 2033 MON. ---- 19 201 1972 WED. 19 232 2003 SAT. 19 263 2034 TUE. 20 202 1973 THU. 29 ! 20 233 2004 SUN. ---- 20 264 2035 WED. 21 203 1974 FRI. 21 234 2005 MON. ---- 21 265 2036 THU. 38 ! 22 204 1975 SAT. 22 235 2006 TUE. 22 266 2037 FRI. 23 205 1976 SUN. ---- 23 236 2007 WED. 23 267 2038 SAT. 24 206 1977 MON. ---- 24 237 2008 THU. 34 ! 24 268 2039 SUN. ---- 25 207 1978 TUE. 25 238 2009 FRI. 25 269 2040 MON. ---- 26 208 1979 WED. 26 239 2010 SAT. 26 270 2041 TUE. 27 209 1980 THU. 30 ! 27 240 2011 SUN. ---- 27 271 2042 WED. 28 210 1981 FRI. 28 241 2012 MON. ---- 28 272 2043 THU. 39 ! 29 211 1982 SAT. 29 242 2013 TUE. 29 273 2044 FRI. 30 212 1983 SUN. ---- 30 243 2014 WED. 30 274 2045 SAT. 31 213 1984 MON. ---- 31 244 2015 THU. 35 ! ------------------------------ ------------------------------ ------------------------------ 2028.-CALENDAR-. OCTOBER NOVEMBER DECEMBER ------------------------------ ------------------------------ ------------------------------ DAY DAY & NO DAY DAY & NO DAY DAY & NO ------------------- --------- ------------------- --------- ------------------- --------- OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK MONTH YEAR ELAPSED WEEK A 12H TU A 12H TU A 12H TU ------------------- --------- ------------------- --------- ------------------- --------- 246 246 246 1 275 2046 SUN. ---- 1 306 2077 WED. 1 336 2107 FRI. 2 276 2047 MON. ---- 2 307 2078 THU. 44 ! 2 337 2108 SAT. 3 277 2048 TUE. 3 308 2079 FRI. 3 338 2109 SUN. ---- 4 278 2049 WED. 4 309 2080 SAT. 4 339 2110 MON. ---- 5 279 2050 THU. 40 ! 5 310 2081 SUN. ---- 5 340 2111 TUE. 6 280 2051 FRI. 6 311 2082 MON. ---- 6 341 2112 WED. 7 281 2052 SAT. 7 312 2083 TUE. 7 342 2113 THU. 49 ! 8 282 2053 SUN. ---- 8 313 2084 WED. 8 343 2114 FRI. 9 283 2054 MON. ---- 9 314 2085 THU. 45 ! 9 344 2115 SAT. 10 284 2055 TUE. 10 315 2086 FRI. 10 345 2116 SUN. ---- 11 285 2056 WED. 11 316 2087 SAT. 11 346 2117 MON. ---- 12 286 2057 THU. 41 ! 12 317 2088 SUN. ---- 12 347 2118 TUE. 13 287 2058 FRI. 13 318 2089 MON. ---- 13 348 2119 WED. 14 288 2059 SAT. 14 319 2090 TUE. 14 349 2120 THU. 50 ! 15 289 2060 SUN. ---- 15 320 2091 WED. 15 350 2121 FRI. 16 290 2061 MON. ---- 16 321 2092 THU. 46 ! 16 351 2122 SAT. 17 291 2062 TUE. 17 322 2093 FRI. 17 352 2123 SUN. ---- 18 292 2063 WED. 18 323 2094 SAT. 18 353 2124 MON. ---- 19 293 2064 THU. 42 ! 19 324 2095 SUN. ---- 19 354 2125 TUE. 20 294 2065 FRI. 20 325 2096 MON. ---- 20 355 2126 WED. 21 295 2066 SAT. 21 326 2097 TUE. 21 356 2127 THU. 51 ! 22 296 2067 SUN. ---- 22 327 2098 WED. 22 357 2128 FRI. 23 297 2068 MON. ---- 23 328 2099 THU. 47 ! 23 358 2129 SAT. 24 298 2069 TUE. 24 329 2100 FRI. 24 359 2130 SUN. ---- 25 299 2070 WED. 25 330 2101 SAT. 25 360 2131 MON. ---- 26 300 2071 THU. 43 ! 26 331 2102 SUN. ---- 26 361 2132 TUE. 27 301 2072 FRI. 27 332 2103 MON. ---- 27 362 2133 WED. 28 302 2073 SAT. 28 333 2104 TUE. 28 363 2134 THU. 52 ! 29 303 2074 SUN. ---- 29 334 2105 WED. 29 364 2135 FRI. 30 304 2075 MON. ---- 30 335 2106 THU. 48 ! 30 365 2136 SAT. 31 305 2076 TUE. 31 366 2137 SUN. ---- ------------------------------ ------------------------------ ------------------------------