Editing Leap year starting on Wednesday (section)

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A '''leap year starting on Wednesday''' is any year with 366 days (i.e. it includes [[29 February]]) that begins on [[Wednesday]] 1 January and ends on [[Thursday]] 31 December. Its [[dominical letter]]s hence are '''ED'''. The most recent year of such kind was [[2020]], and the next one will be [[AD 2048|2048]] in the [[Gregorian calendar]], or likewise, [[2004]] and [[2032]] in the obsolete [[Julian calendar]], see below for more.<ref name="math">{{cite web|url=https://webspace.science.uu.nl/~gent0113/calendar/isocalendar.htm |author=Robert van Gent |title=The Mathematics of the ISO 8601 Calendar |publisher=Utrecht University, Department of Mathematics |date=2017 |access-date=20 July 2017}}</ref>

Any leap year that starts on [[Wednesday]] has two [[Friday the 13th]]s: those two in this leap year [[March 13|occur in March]] and [[November 13|November]]. [[Common years starting on Thursday]] share this characteristic, but also have another [[February 13|in February]].

[[Leap year starting on Sunday|Leap years starting on Sunday]] also share a similar characteristic to this type of leap year, three [[Friday the 13th]]'s have a three month gap between them, the former two being in [[Common year starting on Tuesday|the common year preceding this type of leap year]], those being [[September]] and [[December]], and the latter being in this type of year, that being [[March]]. [[Leap year starting on Sunday|Leap years starting on Sunday]] share this by having [[January]], [[April]] and [[July]] three months apart from each other.

This is the only leap year with three occurrences of [[Friday the 13th #Friday the 17th in Italy|Friday the 17th]]: those three in this leap year occur three months (13 weeks) apart: [[January 17|in January]], [[April 17|April]], and [[July 17|July]]. [[Common year starting on Sunday|Common years starting on Sunday]] share this characteristic, in the months of February, March, and November.

From [[August]] of the [[Common year starting on Tuesday|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 #Tuesday the 13th in Hispanic and Greek culture|Tuesday the 13th]], as in 2019-20. [[common year starting on Saturday|Common years starting on Saturday]] share this characteristic, from [[July]] of the year that precedes it to [[September]] in that type of year, as in 2021-22.

This year has four months (February, March, August and November) which begin on a weekend-day.