Julian
-8000
-7000
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0
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
1960
1970
1980
1990
2000
2010
2020
2025
2030
2040
2050
2060
2070
2080
2090
2100
2110
2120
2130
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
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2190
2200
2210
2220
2230
2240
2250
2260
2270
2280
2300
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2500
2600
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2800
3000
4000
January
February
March
April
May
June
July
August
September
October
November
December
--
starts at 2163-01-15
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