21世纪年份,根据日期和星期对应的关系分为14种:
A型:2001,2007,2018,2029,2035,2046,2057,2063,2074,2085,2091
B型:2002,2013,2019,2030,2041,2047,2058,2069,2075,2086,2097
C型:2003,2014,2025,2031,2042,2053,2059,2070,2081,2087,2098
D型:2005,2011,2022,2033,2039,2050,2061,2067,2078,2089,2095
E型:2006,2017,2023,2034,2045,2051,2062,2073,2079,2090
F型:
2009,2015,2026,2037,2043,2054,2065,2071,2082,2093,2099
G型:
2010,2021,2027,2038,2049,2055,2066,2077,2083,2094
α型:2004,2032,2060,2088
β型:2008,2036,2064,2092
γ型:2012,2040,2068,2096
δ型:2016,2044,2072
ε型:2020,2048,2076
ζ型:2024,2052,2080
η型:2028,2056,2084
A型:2001,2007,2018,2029,2035,2046,2057,2063,2074,2085,2091
B型:2002,2013,2019,2030,2041,2047,2058,2069,2075,2086,2097
C型:2003,2014,2025,2031,2042,2053,2059,2070,2081,2087,2098
D型:2005,2011,2022,2033,2039,2050,2061,2067,2078,2089,2095
E型:2006,2017,2023,2034,2045,2051,2062,2073,2079,2090
F型:
2009,2015,2026,2037,2043,2054,2065,2071,2082,2093,2099
G型:
2010,2021,2027,2038,2049,2055,2066,2077,2083,2094
α型:2004,2032,2060,2088
β型:2008,2036,2064,2092
γ型:2012,2040,2068,2096
δ型:2016,2044,2072
ε型:2020,2048,2076
ζ型:2024,2052,2080
η型:2028,2056,2084