Leap year starting on Monday

Leap year starting on Monday
A leap year starting on Monday is any year with 366 days (i.e. it includes 29 February) that begins on Monday, 1 January, and ends on Tuesday, 31 December. Its dominical letters hence are GF. The most recent year of such kind was 1996 and the next year will be 2024 in the Gregorian calendar or, likewise, 2008, and 2036 in the obsolete Julian calendar.
Any leap year that starts on Monday, Wednesday or Thursday has two Friday the 13ths: those two in this leap year occur in September and December. Common years starting on Tuesday share this characteristic.
Calendars
Applicable years
Gregorian Calendar
Leap years that begin on Monday, along with those starting on Saturday 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).
Julian Calendar
Like all leap year types, the one starting with 1 January on a Monday 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).
Holidays
International
Valentine's Day falls on a Wednesday
The leap day (February 29) falls on a Thursday
World Day for Grandparents and the Elderly falls on its latest possible date, July 28
Halloween falls on a Thursday
Christmas Day falls on a Wednesday
Roman Catholic Solemnities
Epiphany falls on a Saturday
Candlemas falls on a Friday
Saint Joseph's Day falls on a Tuesday
The Annunciation of Jesus falls on a Monday
The Nativity of John the Baptist falls on a Monday
The Solemnity of Saints Peter and Paul falls on a Saturday
The Transfiguration of Jesus falls on a Tuesday
The Assumption of Mary falls on a Thursday
The Exaltation of the Holy Cross falls on a Saturday
All Saints' Day falls on a Friday
All Souls' Day falls on a Saturday
The Feast of Christ the King falls on November 24 (or on October 27 in versions of the calendar between 1925 and 1962)
The First Sunday of Advent falls on December 1
The Immaculate Conception falls on a Sunday
Gaudete Sunday falls on December 15
Rorate Sunday falls on December 22
Australia and New Zealand
Australia Day falls on a Friday
Waitangi Day falls on a Tuesday
Daylight saving ends on its latest possible date, April 7 – the period of daylight saving which ends on April 7 of a leap year starting on Monday is the only period ending in any year to last 27 weeks in Australia and 28 weeks in New Zealand; in all other instances, the period of daylight saving lasts only 26 weeks in Australia and 27 weeks in New Zealand
ANZAC Day falls on a Thursday
Mother's Day falls on May 12
Father's Day falls on its earliest possible date, September 1
Daylight saving begins on September 29 in New Zealand and October 6 in Australia
British Isles
Saint David's Day falls on a Friday
Mother's Day falls on March 3, March 10, March 17, March 24 or March 31
Saint Patrick's Day falls on a Sunday
Daylight saving begins on its latest possible date, March 31
Saint George's Day falls on a Tuesday
Father's Day falls on June 16
Orangeman's Day falls on a Friday
Daylight saving ends on October 27
Guy Fawkes Night falls on a Tuesday
Saint Andrew's Day falls on a Saturday
Canada
Daylight saving begins on March 10
Mother's Day falls on May 12
Victoria Day falls on May 20
Father's Day falls on June 16
Canada Day falls on a Monday
Labour Day falls on September 2
Thanksgiving Day falls on its latest possible date, October 14
Daylight saving ends on November 3
United States
Martin Luther King Jr. Day falls on its earliest possible date, January 15
President's Day falls on February 19
Daylight saving begins on March 10
Mother's Day falls on May 12
Memorial Day falls on May 27
Father's Day falls on June 16
Juneteenth falls on a Wednesday
Independence Day falls on a Thursday
Labor Day falls on September 2
Grandparents' Day falls on September 8
Columbus Day falls on its latest possible date, October 14 (this is the only year when Martin Luther King Jr. Day and Columbus Day are 39 weeks apart) They are 38 weeks apart in all other years
Daylight saving ends on November 3
Election Day falls on November 5
Thanksgiving Day falls on its latest possible date, November 28 (this is also the only year when Martin Luther King Jr. Day and Thanksgiving are 318 days apart) They are 311 days apart in all other years
References
Gregorian calendar
Monday