Английская Википедия:Common year starting on Wednesday

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Шаблон:Short description A common year starting on Wednesday is any non-leap year (a year with 365 days) that begins on Wednesday, 1 January, and ends on Wednesday, 31 December.Шаблон:Citation needed Its dominical letter hence is E. The most recent year of such kind was 2014, and the next one will be 2025 in the Gregorian calendar[1] or, likewise, 2015 and 2026 in the obsolete Julian calendar, see below for more. This common year is one of the three possible common years in which a century year can begin on, and occurs in century years that yield a remainder of 200 when divided by 400. The most recent such year was 1800 and the next one will be 2200.

Any common year that starts on Wednesday, Friday or Saturday has only one Friday the 13th: the only one in this common year occurs in June. Leap years starting on Tuesday share this characteristic.

Calendars

Шаблон:Calendar

Шаблон:Calendar

Applicable years

Gregorian Calendar

In the (currently used) Gregorian calendar, alongside Sunday, Monday, Friday or Saturday, the fourteen types of year (seven common, seven leap) repeat in a 400-year cycle (20871 weeks). Forty-three common years per cycle or exactly 10.75% start on a Wednesday. The 28-year sub-cycle only spans across century years divisible by 400, e.g. 1600, 2000, and 2400.

Gregorian common years starting on Wednesday[1]
Decade 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th
16th century prior to first adoption (proleptic) 1586 1597
17th century 1603 1614 1625 1631 1642 1653 1659 1670 1681 1687 1698
18th century 1710 1721 1727 1738 1749 1755 1766 1777 1783 1794 1800
19th century 1806 1817 1823 1834 1845 1851 1862 1873 1879 1890
20th century 1902 1913 1919 1930 1941 1947 1958 1969 1975 1986 1997
21st century 2003 2014 2025 2031 2042 2053 2059 2070 2081 2087 2098
22nd century 2110 2121 2127 2138 2149 2155 2166 2177 2183 2194 2200
23rd century 2206 2217 2223 2234 2245 2251 2262 2273 2279 2290
24th century 2302 2313 2319 2330 2341 2347 2358 2369 2375 2386 2397
400-year cycle
0–99 3 14 25 31 42 53 59 70 81 87 98
100–199 110 121 127 138 149 155 166 177 183 194
200–299 200 206 217 223 234 245 251 262 273 279 290
300–399 302 313 319 330 341 347 358 369 375 386 397

Julian Calendar

In the now-obsolete Julian calendar, the fourteen types of year (seven common, seven leap) repeat in a 28-year cycle (1461 weeks). A leap year has two adjoining dominical letters (one for January and February and the other for March to December, as 29 February has no letter). This sequence occurs exactly once within a cycle, and every common letter thrice.

As the Julian calendar repeats after 28 years that means it will also repeat after 700 years, i.e. 25 cycles. The year's position in the cycle is given by the formula ((year + 8) mod 28) + 1). Years 2, 8 and 19 of the cycle are common years beginning on Wednesday. 2017 is year 10 of the cycle. Approximately 10.71% of all years are common years beginning on Wednesday.

Julian common years starting on Wednesday
Decade 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th
15th century 1410 1421 1427 1438 1449 1455 1466 1477 1483 1494
16th century 1505 1511 1522 1533 1539 1550 1561 1567 1578 1589 1595
17th century 1606 1617 1623 1634 1645 1651 1662 1673 1679 1690
18th century 1701 1707 1718 1729 1735 1746 1757 1763 1774 1785 1791
19th century 1802 1813 1819 1830 1841 1847 1858 1869 1875 1886 1897
20th century 1903 1914 1925 1931 1942 1953 1959 1970 1981 1987 1998
21st century 2009 2015 2026 2037 2043 2054 2065 2071 2082 2093 2099

Holidays

International

Roman Catholic Solemnities

Australia and New Zealand

British Isles

Canada

United States

References

Шаблон:Reflist Шаблон:List of calendars