Sym454 -8000 -7000 -6000 -5000 -4000 -3000 -2000 -1000 0 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 1940 1950 1960 1970 1980 1990 2000 2010 2020 2025 2030 2040 2050 2060 2070 2080 2090 2100 2110 2120 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2170 2180 2190 2200 2210 2220 2230 2240 2250 2260 2300 2400 2500 2600 2700 2800 3000 4000 January February March April May June July August September October November December -- starts at 2148-12-30