A common year starting on Thursday is any non- leap year (i.e. a year with 365 days) that begins on Thursday,

1 January January 1 or 1 January is the first day of the year in the Gregorian Calendar. There are 364 days remaining until the end of the year (365 in leap years). This day is also known as New Year's Day since the day marks the beginning of the year. ...

, and ends on Thursday,

31 December It is known by a collection of names including: Saint Sylvester's Day, New Year's Eve or Old Years Day/Night, as the following day is New Year's Day. It is the last day of the year; the following day is January 1, the first day of the followin ...

. Its dominical letter hence is D. The most recent year of such kind was

2015 File:2015 Events Collage new.png, From top left, clockwise: Civil service in remembrance of November 2015 Paris attacks; Germanwings Flight 9525 was purposely crashed into the French Alps; the rubble of residences in Kathmandu following the Apri ...

and the next one will be

2026 Predicted and scheduled events * January 1 ** In the United States, books, films, and other works published in 1930 will enter the public domain, assuming there are no changes made to copyright law. ** ''Soup to Nuts'', the first on-scree ...

in the Gregorian calendar or, likewise,

2021 File:2021 collage V2.png, From top left, clockwise: the James Webb Space Telescope was launched in 2021; Protesters in Yangon, Myanmar following the 2021 Myanmar coup d'état, coup d'état; A civil demonstration against the October–November 2021 ...

and

2027 Predicted and scheduled events * January 1 – In the United States, books, films, and other works published in 1931 will enter the public domain, assuming there are no changes made to copyright law. * February 6 – Annular solar e ...

in the obsolete Julian calendar, see below for more. This is the only common year with three occurrences of

Friday the 13th Friday the 13th is considered an unlucky day in Western superstition. It occurs when the 13th day of the month in the Gregorian calendar falls on a Friday, which happens at least once every year but can occur up to three times in the same year. ...

: those three in this common year occur in February, March, and

November November is the eleventh and penultimate month of the year in the Julian and Gregorian Calendars, the fourth and last of four months to have a length of 30 days and the fifth and last of five months to have a length of fewer than 31 days. No ...

Leap years starting on Sunday A leap year starting on Sunday is any year with 366 days (i.e. it includes 29 February) that begins on Sunday, 1 January, and ends on Monday, 31 December. Its dominical letters hence are AG. The most recent year of such kind was 2012 and the next ...

share this characteristic, for the months January, April and July. From February until March in this type of year is also the shortest period (one month) that runs between two instances of

. In this common year, February is a unique rectangle calendar when weeks start on Sundays, Martin Luther King Jr. Day is on January 19, Valentine’s Day is on a Saturday, President's Day is on February 16,

Saint Patrick’s Day Saint Patrick's Day, or the Feast of Saint Patrick ( ga, Lá Fhéile Pádraig, lit=the Day of the Festival of Patrick), is a cultural and religious celebration held on 17 March, the traditional death date of Saint Patrick (), the foremost pat ...

is on a Tuesday, Memorial Day is on its earliest possible date, May 25,

U.S. Independence Day Independence Day ( colloquially the Fourth of July) is a federal holiday in the United States commemorating the Declaration of Independence, which was ratified by the Second Continental Congress on July 4, 1776, establishing the United Sta ...

and

Halloween Halloween or Hallowe'en (less commonly known as Allhalloween, All Hallows' Eve, or All Saints' Eve) is a celebration observed in many countries on 31 October, the eve of the Western Christian feast of All Saints' Day. It begins the observanc ...

are on a Saturday,

Labor Day Labor Day is a federal holiday in the United States celebrated on the first Monday in September to honor and recognize the American labor movement and the works and contributions of laborers to the development and achievements of the United St ...

is on its latest possible date, September 7, Thanksgiving is on November 26, and

Christmas Christmas is an annual festival commemorating the birth of Jesus Christ, observed primarily on December 25 as a religious and cultural celebration among billions of people around the world. A feast central to the Christian liturgical year ...

is on a Friday. This common year is also the only one where Memorial Day and

are not 14 weeks (98 days) apart: they are 15 weeks (105 days) apart in this common year. Leap years starting on Wednesday share this characteristic.

Calendars

Applicable years

Gregorian Calendar

In the (currently used) Gregorian calendar, alongside Tuesday, the fourteen types of year (seven common, seven leap) repeat in a 400-year cycle (20871 weeks). Forty-four common years per cycle or exactly 11% start on a Thursday. The 28-year sub-cycle only spans across century years divisible by 400, e.g. 1600, 2000, and 2400. 400 year cycle century 1: 9, 15, 26, 37, 43, 54, 65, 71, 82, 93, 99 century 2: 105, 111, 122, 133, 139, 150, 161, 167, 178, 189, 195 century 3: 201, 207, 218, 229, 235, 246, 257, 263, 274, 285, 291 century 4: 303, 314, 325, 331, 342, 353, 359, 370, 381, 387, 398

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 3, 14 and 20 of the cycle are common years beginning on Thursday. 2017 is year 10 of the cycle. Approximately 10.71% of all years are common years beginning on Thursday.

References

{{DEFAULTSORT:Common Year Starting On Thursday Gregorian calendar Julian calendar Thursday