Leap 5th Lunar Month in Chinese Calendar 2001
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There is a leap lunar month after the 4th month in the Chinese Civil Calendar year 2001. The Chinese Civil Calendar is the official calendar announced by the China, Taiwan and Hong Kong governments using the time zone of east longitude 120 degrees. However, the leap month is the 5th lunar month in the Chinese Civil Calendar and Chinese Astronomical Calendar using the time zone of west longitude 120 degrees, which is US Pacific Standard Time (PST).
A lunar month not containing a Center Point is a Leap Month. The following is the listing of dates and times about new moon days and the Solar Center points for us to determine the location of the Leap Month.
2001 US PST Civil Calendar |
| Month Name | New Moon Date/Time | Zodiac Date/Time | Zodiac Month |
| 3rd Lunar Month | 03-24 17:21 | ||
| 04-04 09:24 | Clear and Bright (Dragon Month) | ||
| 04-19 16:36 | Grain Rains (Taurus) - Center Point | ||
| 4th Lunar Month | 04-23 07:26 | ||
| 05-05 02:45 | Start of Summer (Snake month) | ||
| 05-20 15:44 | Grain Fills (Gemini) - Center Point | ||
| 5th Lunar Month | 05-22 18:46 | ||
| 06-05 06:54 | Grain in Ear (Horse Month) | ||
| 06-20 23:58 | Summer Solstice (Cancer) - Center Point | ||
| Leap 5th Month | 06-21 03:58 | No Center point | |
| 07-06 17:07 | Slight Heat (Sheep Month) | ||
| 6th Lunar Month | 07-20 11:44 | ||
| 07-22 10:26 | Great Heat (Leo) - Center Point | ||
| 08-07 02:52 | Start of Autumn (Monkey Month) | ||
| 7th Lunar Month | 08-18 18:55 |
The first day of the leap 5th month is on 6-21-01 and the last day of this month is on 07-19-01. There is no Center Point in this month. Therefore this month is a Leap Month. The name of the leap month uses the previous month name.
2001 US PST Astronomical Calendar |
| Month Name | New Moon Date/Time | Zodiac Date/Time | Zodiac Month |
| 4th Lunar Month | 04-23 07:26 | ||
| 05-05 02:45 | Start of Summer (Snake month) | ||
| 05-20 15:44 | Grain Fills (Gemini) - Center Point | ||
| 5th Lunar Month | 05-22 18:46 | ||
| 06-05 06:54/td> | Grain in Ear (Horse Month) | ||
| 06-20 23:58 | Summer Solstice (Cancer) - Center Point | ||
| Leap 5th Month | 06-21 03:58 | No Center point | |
| 07-06 17:07 | Slight Heat (Sheep Month) | ||
| 6th Lunar Month | 07-20 11:44 | ||
| 07-22 10:26 | Great Heat (Leo) - Center Point | ||
| 08-07 02:52 | Start of Autumn (Monkey Month) | ||
| 7th Lunar Month | 08-18 18:55 |
In the theory of the Astronomical Calendar, the 5th lunar month, from 18:46 of 05-22 to 03:57 of 06-21, includes the Center Point of Summer Solstice. Therefore it's not a leap month.
The leap 5th month from 03:58 of 06-21 to 11:44 of 07-20 is a leap month because it contains no Center Point.
The Astronomical Calendar compares dates and times of the new moon day and the Center Point. The Civil Calendar compares only the dates of the new moon day and the Center Point.
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