Leap year starting on Thursday

A leap year starting on Thursday is any year with 366 days (i.e. it includes 29 February) that begins on Thursday 1 January, and ends on Friday 31 December. Its dominical letters hence are DC. The most recent year of such kind was 2004 and the next one will be 2032 in the Gregorian calendar^[1] or, likewise, 2016 and 2044 in the obsolete Julian calendar.

This is the only year in which February has five Sundays, as the leap day adds that extra Sunday.

This is the only leap year with three occurrences of Tuesday the 13th: those three in this leap year occur three months (13 weeks) apart: in January, April, and July. Common years starting on Monday share this characteristic, in the months of February, March, and November.

Any leap year that starts on Monday, Wednesday or Thursday has two Friday the 13ths: those two in this leap year occur in February and August.

If this year occurs, the leap day falls on a Sunday (similar to its common year equivalent), transitioning it from what it would appear to be a common year starting on Thursday to the next common year after the previous one, so March 1 would start on a Monday, like it would be on its common year equivalent (March to December of this type of year aligns with the common year equivalent, that should've happened 5 years earlier in order for this type of leap year to start due to the cyclical nature of the calendar.) The previous leap year would have to have been on a Saturday due to the Gregorian Calendar's cyclical nature.