What is 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. 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 [[January 13|in January]] and [[October 13|October]]. This common year is the only one with three Friday the 17ths. The Friday the 17ths in this common year are [[February 17|in February]], [[March 17|March]], and [[November 17|November]]. The other type of year with three Friday the 17ths is [[Leap year starting on Wednesday]], which has Friday the 17ths in [[January 17|January]], [[April 17|April]], and [[July 17|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 [[June 13|in June]]. [[Leap year starting on Saturday|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