Leap month
Leap month(The う づ coming which can, the じ ゅ it is the げ) with,Luni-solar calendarPutting, calendar factSeasonWith it is the month when it is inserted in order to prevent the fact that it slips. Presence of insertion of leap month,Lunar calendarWith it is the difference with the luni-solar calendar.
As for 12 months by the pure lunar calendar in 354 days, solar calendar. This gap at 11×3=33 day in 3 years reaches about 1 months's amount. Then, 1 time, inserting excessive 1 month in approximately 3 years, it cancels the gap. This excessive monthLeap monthWith you say. Month name of leap month attaches "intercalary" to month name of front month. For example, the leap month when April is inserted next is "intercalary April". Leap month was inserted, thing of the year 1 year 13 months ago leap year.
When leap month 7 degrees is inserted in 19 years, it was known for a long time that the calendar can be used without error. As for this, month phase of a certain date (how to be lacking of month) being something due to the fact that the period when it becomes same is 19 years, this periodMetonic cycle(You call lunar chapter).
The Chinese calendarSo,24 seasonal data pointsPosition intercalary method during the year when the month when it is not included is designated as leap month has been taken the paralysis.
Related item
