Type of year B on a solar calendar according to its starting and ending days in the week
A common year starting on Saturday is any non-leap year (i.e. a year with 365 days) that begins on Saturday , 1 January, and ends on Saturday, 31 December. Its dominical letter hence is B . The most recent year of such kind was 2022 and the next one will be 2033 in the Gregorian calendar[1] or, likewise, 2023 and 2034 in the obsolete Julian calendar . See below for more .
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 May . Leap years starting on Friday share this characteristic.
From July of the year that precedes this year (In this case, 2021 , which was the most recent common year to start on a Friday ) until September in this type of year is the longest period (14 months) that occurs without a Tuesday the 13th . Leap years starting on Wednesday share this characteristic, from August of the common year that precedes it (Common year starting on Tuesday) to October in that type of year.
Calendars [ edit ] Calendar for any common year starting on Saturday, presented as common in many English-speaking areas January Su Mo Tu We Th Fr Sa 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
February Su Mo Tu We Th Fr Sa 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
March Su Mo Tu We Th Fr Sa 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
April Su Mo Tu We Th Fr Sa 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
May Su Mo Tu We Th Fr Sa 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
June Su Mo Tu We Th Fr Sa 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
July Su Mo Tu We Th Fr Sa 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
August Su Mo Tu We Th Fr Sa 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
September Su Mo Tu We Th Fr Sa 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
October Su Mo Tu We Th Fr Sa 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
November Su Mo Tu We Th Fr Sa 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
December Su Mo Tu We Th Fr Sa 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
ISO 8601 -conformant calendar with week numbers for any common year starting on Saturday (dominical letter B) preceded by Common year starting on Friday (dominical letter C) January Wk Mo Tu We Th Fr Sa Su 52 01 02 01 03 04 05 06 07 08 09 02 10 11 12 13 14 15 16 03 17 18 19 20 21 22 23 04 24 25 26 27 28 29 30 05 31
February Wk Mo Tu We Th Fr Sa Su 05 01 02 03 04 05 06 06 07 08 09 10 11 12 13 07 14 15 16 17 18 19 20 08 21 22 23 24 25 26 27 09 28
March Wk Mo Tu We Th Fr Sa Su 09 01 02 03 04 05 06 10 07 08 09 10 11 12 13 11 14 15 16 17 18 19 20 12 21 22 23 24 25 26 27 13 28 29 30 31
April Wk Mo Tu We Th Fr Sa Su 13 01 02 03 14 04 05 06 07 08 09 10 15 11 12 13 14 15 16 17 16 18 19 20 21 22 23 24 17 25 26 27 28 29 30
May Wk Mo Tu We Th Fr Sa Su 17 01 18 02 03 04 05 06 07 08 19 09 10 11 12 13 14 15 20 16 17 18 19 20 21 22 21 23 24 25 26 27 28 29 22 30 31
June Wk Mo Tu We Th Fr Sa Su 22 01 02 03 04 05 23 06 07 08 09 10 11 12 24 13 14 15 16 17 18 19 25 20 21 22 23 24 25 26 26 27 28 29 30
July Wk Mo Tu We Th Fr Sa Su 26 01 02 03 27 04 05 06 07 08 09 10 28 11 12 13 14 15 16 17 29 18 19 20 21 22 23 24 30 25 26 27 28 29 30 31
August Wk Mo Tu We Th Fr Sa Su 31 01 02 03 04 05 06 07 32 08 09 10 11 12 13 14 33 15 16 17 18 19 20 21 34 22 23 24 25 26 27 28 35 29 30 31
September Wk Mo Tu We Th Fr Sa Su 35 01 02 03 04 36 05 06 07 08 09 10 11 37 12 13 14 15 16 17 18 38 19 20 21 22 23 24 25 39 26 27 28 29 30
October Wk Mo Tu We Th Fr Sa Su 39 01 02 40 03 04 05 06 07 08 09 41 10 11 12 13 14 15 16 42 17 18 19 20 21 22 23 43 24 25 26 27 28 29 30 44 31
November Wk Mo Tu We Th Fr Sa Su 44 01 02 03 04 05 06 45 07 08 09 10 11 12 13 46 14 15 16 17 18 19 20 47 21 22 23 24 25 26 27 48 28 29 30
December Wk Mo Tu We Th Fr Sa Su 48 01 02 03 04 49 05 06 07 08 09 10 11 50 12 13 14 15 16 17 18 51 19 20 21 22 23 24 25 52 26 27 28 29 30 31
ISO 8601 -conformant calendar with week numbers for any common year starting on Saturday (dominical letter B) preceded by Leap year starting on Thursday (dominical letter DC) January Wk Mo Tu We Th Fr Sa Su 53 01 02 01 03 04 05 06 07 08 09 02 10 11 12 13 14 15 16 03 17 18 19 20 21 22 23 04 24 25 26 27 28 29 30 05 31
February Wk Mo Tu We Th Fr Sa Su 05 01 02 03 04 05 06 06 07 08 09 10 11 12 13 07 14 15 16 17 18 19 20 08 21 22 23 24 25 26 27 09 28
March Wk Mo Tu We Th Fr Sa Su 09 01 02 03 04 05 06 10 07 08 09 10 11 12 13 11 14 15 16 17 18 19 20 12 21 22 23 24 25 26 27 13 28 29 30 31
April Wk Mo Tu We Th Fr Sa Su 13 01 02 03 14 04 05 06 07 08 09 10 15 11 12 13 14 15 16 17 16 18 19 20 21 22 23 24 17 25 26 27 28 29 30
May Wk Mo Tu We Th Fr Sa Su 17 01 18 02 03 04 05 06 07 08 19 09 10 11 12 13 14 15 20 16 17 18 19 20 21 22 21 23 24 25 26 27 28 29 22 30 31
June Wk Mo Tu We Th Fr Sa Su 22 01 02 03 04 05 23 06 07 08 09 10 11 12 24 13 14 15 16 17 18 19 25 20 21 22 23 24 25 26 26 27 28 29 30
July Wk Mo Tu We Th Fr Sa Su 26 01 02 03 27 04 05 06 07 08 09 10 28 11 12 13 14 15 16 17 29 18 19 20 21 22 23 24 30 25 26 27 28 29 30 31
August Wk Mo Tu We Th Fr Sa Su 31 01 02 03 04 05 06 07 32 08 09 10 11 12 13 14 33 15 16 17 18 19 20 21 34 22 23 24 25 26 27 28 35 29 30 31
September Wk Mo Tu We Th Fr Sa Su 35 01 02 03 04 36 05 06 07 08 09 10 11 37 12 13 14 15 16 17 18 38 19 20 21 22 23 24 25 39 26 27 28 29 30
October Wk Mo Tu We Th Fr Sa Su 39 01 02 40 03 04 05 06 07 08 09 41 10 11 12 13 14 15 16 42 17 18 19 20 21 22 23 43 24 25 26 27 28 29 30 44 31
November Wk Mo Tu We Th Fr Sa Su 44 01 02 03 04 05 06 45 07 08 09 10 11 12 13 46 14 15 16 17 18 19 20 47 21 22 23 24 25 26 27 48 28 29 30
December Wk Mo Tu We Th Fr Sa Su 48 01 02 03 04 49 05 06 07 08 09 10 11 50 12 13 14 15 16 17 18 51 19 20 21 22 23 24 25 52 26 27 28 29 30 31
Applicable years [ edit ] Gregorian Calendar [ edit ] In the (currently used) Gregorian calendar, alongside Sunday , Monday , Wednesday or Friday , 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 Saturday. The 28-year sub-cycle will break at a century year which is not divisible by 400 (e.g. it broke at the year 1900 but not at the year 2000).
400-year cycle 0–99 5 11 22 33 39 50 61 67 78 89 95 100–199 101 107 118 129 135 146 157 163 174 185 191 200–299 203 214 225 231 242 253 259 270 281 287 298 300–399 310 321 327 338 349 355 366 377 383 394
Julian Calendar [ edit ] 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 in the Church of England, as 29 February has no letter). Each of the seven two-letter sequences occurs 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 10, 16 and 27 of the cycle are common years beginning on Saturday. 2017 is year 10 of the cycle. Approximately 10.71% of all years are common years beginning on Saturday.
Julian common years starting on Saturday Decade 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 15th century 1401 1407 1418 1429 1435 1446 1457 1463 1474 1485 1491 16th century 1502 1513 1519 1530 — 1541 1547 1558 1569 1575 1586 1597 17th century 1603 1614 1625 1631 1642 1653 1659 1670 — 1681 1687 1698 18th century 1709 1715 1726 1737 1743 1754 1765 1771 1782 1793 1799 19th century 1810 — 1821 1827 1838 1849 1855 1866 1877 1883 1894 20th century 1905 1911 1922 1933 1939 1950 — 1961 1967 1978 1989 1995 21st century 2006 2017 2023 2034 2045 2051 2062 2073 2079 2090 —
Holidays [ edit ] International [ edit ] Roman Catholic Solemnities [ edit ] Australia and New Zealand [ edit ] British Isles [ edit ] United States [ edit ] References [ edit ]
Year starts Common years Leap years 1 Jan Count Ratio 31 Dec DL DD Count Ratio 31 Dec DL DD Count Ratio Sun 58 14.50 % Sun A Tue 43 10.75 % Mon AG Wed 15 0 3.75 % Sat 56 14.00 % Sat B Mon 43 10.75 % Sun BA Tue 13 0 3.25 % Fri 58 14.50 % Fri C Sun 43 10.75 % Sat CB Mon 15 0 3.75 % Thu 57 14.25 % Thu D Sat 44 11.00 % Fri DC Sun 13 0 3.25 % Wed 57 14.25 % Wed E Fri 43 10.75 % Thu ED Sat 14 0 3.50 % Tue 58 14.50 % Tue F Thu 44 11.00 % Wed FE Fri 14 0 3.50 % Mon 56 14.00 % Mon G Wed 43 10.75 % Tue GF Thu 13 0 3.25 % ∑ 400 100.0 % 303 75.75 % 97 24.25 %