Editing Chinese calendar (section)

==Holidays==
{{main|List of observances set by the Chinese calendar}}
{{See also|List of festivals in China}}

Various traditional and religious holidays shared by communities throughout the world use the Chinese (Lunisolar) calendar:

=== Chinese New Year ===
{{Main|Chinese New Year}}
The date of the Chinese New Year accords with the patterns of the lunisolar calendar and hence is variable from year to year.

The invariant between years is that the winter solstice, [[Dongzhi (solar term)|Dongzhi]] is required to be in the eleventh month of the year{{sfnp|Reingold|Dershowitz|2018 |pages=313}} This means that Chinese New Year will be on the second new moon after the previous winter solstice, unless there is a leap month 11 or 12 in the previous year.{{sfnp|Aslaksen|2010|pages=31,32}}{{sfnp|Reingold|Dershowitz|2018 |pages=313–316}}

This rule is accurate, however there are two other mostly (but not completely) accurate rules that are commonly stated:{{sfnp|Aslaksen|2010|pages=31,32}}

* The new year is on the new moon closest to [[Lichun]] (typically 4 February).
* The new year is on the first new moon after [[Dahan (solar term)|Dahan]] (typically 20 January)

It has been found that Chinese New Year moves back by either 10, 11, or 12 days in most years. If it falls on or before 31 January, then it moves forward in the next year by either 18, 19, or 20 days.{{sfnp|Aslaksen|2010}}

===Holidays with the same day and same month===
The [[Chinese New Year]] (known as the Spring Festival/{{lang|zh|春節}} in China) is on the first day of the first month and was traditionally called the Yuan Dan ({{lang|zh|元旦}}) or Zheng Ri ({{lang|zh|正日}}). In Vietnam it is known as Tết Nguyên Đán ({{lang|vi|節元旦}}). Traditionally it was the most important holiday of the year. It is an official holiday in China including Hong Kong, Macau, and Taiwan regions,and, Vietnam, Korea, the Philippines, [[Malaysia]], [[Singapore]], Indonesia, and [[Mauritius]]. It is also a public holiday in Thailand's [[Narathiwat]], [[Pattani Province|Pattani]], [[Yala Province|Yala]] and [[Satun]] provinces, and is an official public school holiday in New York City.

The [[Double Third Festival]] is on the third day of the third month.
  
The [[Dragon Boat Festival]], or the [[Duanwu Festival]] ({{lang|zh|端午節}}), is on the fifth day of the fifth month and is an official holiday in China including Hong Kong, Macau, and Taiwan regions. 

The [[Qixi Festival]] ({{lang|zh|七夕節}}) is celebrated in the evening of the seventh day of the seventh month.

The [[Double Ninth Festival]] ({{lang|zh|重陽節}}) is celebrated on the ninth day of the ninth month.

===Full moon holidays (holidays on the fifteenth day)===
The [[Lantern Festival]] is celebrated on the fifteenth day of the first month and was traditionally called the Yuan Xiao ({{lang|zh|元宵}}) or Shang Yuan Festival ({{lang|zh|上元節}}). 

The [[Zhong Yuan Festival]] is celebrated on the fifteenth day of the seventh month.

The [[Mid-Autumn Festival]] is celebrated on the fifteenth day of the eighth month. 

The Xia Yuan Festival is celebrated on the fifteenth day of the tenth month.

===Celebrations of the twelfth month===
The [[Laba Festival]] is on the eighth day of the twelfth month. It is the enlightenment day of Sakyamuni Buddha and in Vietnam is known as {{lang|vi|Lễ Vía Phật Thích Ca thành đạo}}.

The [[Kitchen God Festival]] is celebrated on the twenty-third day of the twelfth month in northern regions of China and on the twenty-fourth day of the twelfth month in southern regions of China.

[[Chinese New Year's Eve]] is also known as the Chuxi Festival and is celebrated on the evening of the last day of the lunar calendar. It is celebrated wherever the lunar calendar is observed.

===Celebrations of solar-term holidays===
The [[Qingming Festival]] ({{lang|zh|[[清明]]节}}) is celebrated on the fifteenth day after the Spring Equinox.

The [[Dongzhi Festival]] ({{lang|zh|[[冬至]]}}) or the Winter Solstice is celebrated.

===Religious holidays based on the lunar calendar===
East Asian [[Mahayana]], [[Taoism|Daoist]], and some [[Caodaism|Cao Dai]] holidays and/or vegetarian observances are based on the Lunar Calendar.<ref>{{cite web|url=https://www.fivepeaks.org/english/calendar/guanyin%20vegetarian.htm|title=2020 Buddhist Calendar|access-date=2020-02-04|archive-date=5 February 2020|archive-url=https://web.archive.org/web/20200205005400/https://www.fivepeaks.org/english/calendar/guanyin%20vegetarian.htm|url-status=live}}</ref><ref>{{cite web|url=https://www.fivepeaks.org/english/calendar/vegetarian.htm|title=Mahayana Buddhist Vegetarian Observances|access-date=2020-02-04|archive-date=5 February 2020|archive-url=https://web.archive.org/web/20200205005333/https://www.fivepeaks.org/english/calendar/vegetarian.htm|url-status=live}}</ref><ref>{{cite web|url=https://kknews.cc/culture/gv2zvl.html|script-title=zh:道教節日有哪些?|language=zh-Hant|trans-title=What are Some of the Holidays of Daoism?|access-date=2020-02-04|archive-date=14 August 2021|archive-url=https://web.archive.org/web/20210814144509/https://kknews.cc/culture/gv2zvl.html|url-status=dead}}</ref>

===Celebrations in Japan===
Many of the above holidays of the lunar calendar are also celebrated in Japan, but since the [[Meiji era]] on the similarly numbered dates of the Gregorian calendar.

===Double celebrations due to intercalary months===
In the case when there is a corresponding [[intercalation (timekeeping)|intercalary month]], the holidays may be celebrated twice. For example, in the hypothetical situation in which there is an additional intercalary seventh month, the Zhong Yuan Festival will be celebrated in the seventh month followed by another celebration in the intercalary seventh month. The next such occasion will be 2033, the first such since the calendar reform of 1645.{{sfnp|Aslaksen|2010}}