Common year starting on Sunday

A common year starting on Sunday is a common year that begins on Sunday, January 1 and ends on Sunday, December 31. Thus, its dominical letter is A. Examples include 1978, 1989, 1995, 2006, 2017, 2023, and 2034 in the Gregorian calendar, or, likewise, 1990, 2001, 2007, 2018, and 2029 in the Julian calendar.

In this common year, January and October start on Sunday, February, March, and November start on Wednesday, April and July start on Saturday, May starts on Monday, June starts on Thursday, August starts on Tuesday, and September and December start on Friday. Thus, there are four months that begin on a weekend day. This is one of four common years with this property, the others being Common year starting on Monday, Common year starting on Wednesday and Common year starting on Thursday.

This common year is one of three common years with two Friday the 13ths, the other two being Common year starting on Monday and Common year starting on Tuesday. The Friday the 13ths in this common year are in January and October.

This common year is the only one with three Friday the 17ths. The Friday the 17ths in this common year are in February, March, and November. The other type of year with three Friday the 17ths is Leap year starting on Wednesday, which has Friday the 17ths in January, April, and July.

This common year is one of three common years with only one Tuesday the 13th, the other two being Common year starting on Tuesday and Common year starting on Wednesday. The only Tuesday the 13th in this common year is in June. Leap years starting on Saturday share this characteristic.

In this common year, Martin Luther King Jr. Day is on January 16, Valentine’s Day is on a Tuesday, Presidents Day is on February 20, Daylight Savings Time begins on March 12, St. Patrick’s Day is on a Friday, Mother’s Day is on its latest possible date, May 14, Memorial Day is on May 29, Father’s Day is on June 18, Independence Day is on a Tuesday, Labor Day is on September 4, Columbus Day is on October 9, Halloween is on a Tuesday, Daylight Savings Time ends on November 5, Veterans Day is on a Saturday, Thanksgiving is on November 23, and Christmas is on a Monday.

In this common year, there are four months (January, April, July and October) which begin on a weekend day.

In a 400-year cycle in the Gregorian Calendar, 43 or 10.75% of all years are common years starting on Sunday. Like all common years, they occur in a pattern of 6-11-11 years (e.g. 1989, 1995, 2006, 2017). However, this pattern gets broken when there is a century year that is not a leap year. Over the past 400-year cycle (from 1600 to 2000), there was a 12-year gap between 1690 and 1702, another 12-year gap between 1797 and 1809, and 6-year gaps between 1893, 1899, 1905, and 1911. In the Julian Calendar, there are three common years starting on Sunday in a 28-year cycle.



<tr style="background-color:#efefef;">
Millennium
Century
Gregorian year"A common year beginning on Sunday",
   jonstlouis.htmlplanet.com, 2011, webpage:
   HTMcal.
2nd millennium:
18th century:
1758
1769
1775
1786
1797
2nd millennium:
19th century:
1809
1815
1826
1837
1843
1854
1865
1871
1882
1893
1899
2nd millennium:
20th century:
1905
1911
1922
1933
1939
1950
1961
1967
1978
1989
1995          
3rd millennium:
21st century:
2006
2017
2023
2034
2045
2051
2062
2073
2079
2090

3rd millennium:
22nd century:
2102
2113
2119
2130
2141
2147
2158
2169
2175
2186
2197

<tr style="background-color:#efefef;">
Millennium
Century
Julian year  "Calendar in year 1805 (Russia)" (Julian calendar, starting Tuesday), webpage:  Julian-1805 (Romania used Julian in 1919, when Russia adopted Gregorian).
2nd millennium:
19th century:
1805
1811
1822
1833
1839
1850
1861
1867
1878
1889
1895
2nd millennium:
20th century:
1906
1917
1923
1934
1951
1962
1973
1979
1990
1996

3rd millennium:
21st century:
2001
2007
2018
2029
2035
2046
2057
2063
2074
2091

3rd millennium:
22nd century:
2102
2113
2119
2130
2141
2147
2158
2169
2175
2186
2197

Notes

Category:Calendars