A leap year starting on Saturday is any year with 366 days (i.e. it includes 29 February) that begins on Saturday, 1 January, and ends on Sunday, 31 December. Its dominical letters hence are BA. The most recent year of such kind was 2000, and the next one will be 2028 in the Gregorian calendar or, likewise 2012 and 2040 in the obsolete Julian calendar. In the Gregorian calendar, years divisible by 400 are always leap years starting on Saturday. The most recent such occurrence was 2000 and the next one will be 2400, see below for more.
Any leap year that starts on Saturday has only one Friday the 13th: the only one in this leap year occurs in October. Common years starting on Sunday share this characteristic, but also have another in January. From August of the common year preceding that year until October in this type of year is also the longest period (14 months) that occurs without a Friday the 13th. Common years starting on Tuesday share this characteristic, from July of the year that precedes it to September in that type of year.
Calendars
Applicable years Gregorian Calendar Leap years that begin on Saturday, along with those starting on Monday and Thursday, occur least frequently: 13 out of 97 (≈ 13.402%) total leap years in a 400-year cycle of the Gregorian calendar. Their overall occurrence is thus 3.25% (13 out of 400).
+ Gregorian leap years starting on Saturday Decade 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 16th century prior to first adoption (proleptic) 1600 17th century 1628 1656 1684 18th century 1724 1752 1780 19th century 1820 1848 1876 20th century 1916 1944 1972 2000 21st century 2028 2056 2084 22nd century 2124 2152 2180 23rd century 2220 2248 2276 24th century 2316 2344 2372 2400 25th century 2428 2456 2484
+ 400-year cycle 0–99 0 28 56 84 100–199 124 152 180 200–299 220 248 276 300–399 316 344 372
Julian Calendar Like all leap year types, the one starting with 1 January on a Saturday occurs exactly once in a 28-year cycle in the Julian calendar, i.e. in 3.57% of years. 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).
+ Julian leap years starting on Saturday Decade 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 15th century 1424 1452 1480 16th century 1508 1536 1564 1592 17th century 1620 1648 1676 18th century 1704 1732 1760 1788 19th century 1816 1844 1872 1900 20th century 1928 1956 1984 21st century 2012 2040 2068 2096 22nd century 2124 2152 2180
Holidays International Valentine's Day falls on a Monday The leap day (February 29) falls on a Tuesday World Day for Grandparents and the Elderly falls on July 23 Halloween falls on a Tuesday Christmas Day falls on a Monday
Roman Catholic Solemnities Epiphany falls on a Thursday Candlemas falls on a Wednesday Saint Joseph's Day falls on a Sunday The Annunciation of Jesus falls on a Saturday The Nativity of John the Baptist falls on a Saturday The Solemnity of Saints Peter and Paul falls on a Thursday The Transfiguration of Jesus falls on a Sunday The Assumption of Mary falls on a Tuesday The Exaltation of the Holy Cross falls on a Thursday All Saints' Day falls on a Wednesday All Souls' Day falls on a Thursday The Feast of Christ the King falls on its latest possible date, November 26 (or on October 29 in versions of the calendar between 1925 and 1962) The First Sunday of Advent falls on its latest possible date, December 3 The Immaculate Conception falls on a Friday Gaudete Sunday falls on its latest possible date, December 17 Rorate Sunday falls on its latest possible date, December 24
Australia and New Zealand Australia Day falls on a Wednesday Waitangi Day falls on a Sunday Daylight saving ends on April 2 ANZAC Day falls on a Tuesday Mother's Day falls on its latest possible date, May 14 Father's Day falls on September 3 Daylight saving begins on its earliest possible date, September 24 in New Zealand and October 1 in Australia
British Isles Saint David's Day falls on a Wednesday Mother's Day falls on March 5, March 12, March 19, March 26 or April 2 Daylight saving begins on March 26 Saint Patrick's Day falls on a Friday Saint George's Day falls on a Sunday Father's Day falls on June 18 Orangeman's Day falls on a Wednesday Daylight saving ends on October 29 Guy Fawkes Night falls on a Sunday Saint Andrew's Day falls on a Thursday
Canada Daylight saving begins on March 12 Mother's Day falls on its latest possible date, May 14 Victoria Day falls on May 22 Father's Day falls on June 18 Canada Day falls on a Saturday Labour Day falls on September 4 Thanksgiving Day falls on October 9 Daylight saving ends on November 5
Denmark The Constitution Day falls on a Monday
Germany The reunification falls on a Tuesday
United States Martin Luther King Jr. Day falls on January 17 President's Day falls on its latest possible date, February 21 Daylight saving begins on March 12 Mother's Day falls on its latest possible date, May 14 Memorial Day falls on May 29 Father's Day falls on June 18 Juneteenth falls on a Monday Independence Day falls on a Tuesday Labor Day falls on September 4 Grandparents' Day falls on September 10 Columbus Day falls on October 9 Daylight saving ends on November 5 Election Day falls on November 7 Thanksgiving Day falls on November 23
References