Handling leap year is fairly straightforward—add an extra day, if using the Gregorian calendar, to the year-month or day interval calculations.

处理闰年相当简单——如果使用公历，在以年月日为时间间隔的计算中添加额外的一天。

youdao

For example, June 2 could apply to any instant of any occurrence of the second day of June (using the Gregorian calendar) in any year.

比如，6月2日可以应用于任意一年的6月份(使用Gregorian日历)的第二天的任意瞬间。

youdao

Handling leap year is fairly straightforward — add an extra day, if using the Gregorian calendar, to the year-month or day interval calculations.

处理闰年相当直接——如果使用罗马日历，就在年——月或者以天为时间间隔的计算中添加额外的一天。

youdao

This was New Year's Day until the 18th Century, and the tax year got separated from it when we jumped 11 days switching to the Gregorian calendar in 1752.

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