A lunisolar calendar is a calendar in many cultures , incorporating lunar calendars and solar calendars . The date of lunisolar calendars therefore indicates both the Moon phase and the time of the solar year , that is the position of the Sun in the Earth's sky . If the sidereal year (such as in a sidereal solar calendar ) is used instead of the solar year, then the calendar will predict the constellation near which the full moon may occur. As with all calendars which divide the year into months there is an additional requirement that the year have a whole number of months. In some cases ordinary years consist of twelve months but every second or third year is an embolismic year , which adds a thirteenth intercalary , embolismic, or leap month.
52-590: National Foundation Day ( 建国記念の日 , Kenkoku Kinen no Hi ) is an annual public holiday in Japan annually held on the 11th February, celebrating the foundation of Japan, enforced by a specific Cabinet Order set in 1966. 11 February is the accession date of the legendary first Emperor of Japan , Emperor Jimmu at Kashihara-gū , converted into Gregorian calendar of 660 BC which is written in Kojiki and chapter 3 of Nihon Shoki . Coincidentally, 11 February 1889
104-475: A corresponding change to the holidays in 2021, moving them to July 22, July 23, and August 9 respectively. Lunisolar calendar Their months are based on the regular cycle of the Moon's phases. So lunisolar calendars are lunar calendars with – in contrast to them – additional intercalation rules being used to bring them into a rough agreement with the solar year and thus with
156-608: A holiday that united the entire Japanese nation in loyalty to the emperor over the length and breadth of Japan. However, the government in Tokyo was as late as 1911 still chiding local officials in rural areas for including in Kigensetsu ceremonies to honor local Shinto gods, reminding them the purpose of Kigensetsu was to unite the Japanese nation in loyalty to the god-emperor in Tokyo, not honor local gods. Given its reliance on
208-409: A holiday, known as kokumin no kyūjitsu ( 国民の休日 , literally "citizens' holiday") . May 4, sandwiched between Constitution Memorial Day on May 3 and Children's Day on May 5, was an annual example of such a holiday until it was replaced by Greenery Day in 2007. Although it is not an official holiday, most companies voluntarily designate a holiday from December 29 to January 3, or, depending on
260-637: A lunisolar system. The Chinese, Coligny and Hebrew lunisolar calendars track more or less the tropical year whereas the Buddhist and Hindu lunisolar calendars track the sidereal year. Therefore, the first three give an idea of the seasons whereas the last two give an idea of the position among the constellations of the full moon. The Chinese calendar or Chinese lunisolar calendar is also called Agricultural Calendar [農曆; 农历; Nónglì; 'farming calendar'], or Yin Calendar [陰曆; 阴历; Yīnlì; 'yin calendar']), based on
312-529: A secular form, such as the Niiname-no-Matsuri holiday in November (which became Labor Thanksgiving Day ), the Kigensetsu holiday was effectively abolished when Japan enacted a new national holiday law in 1948. Even after the occupation ended, there was widespread opposition to reviving the holiday within Japan due to its association with militarism. However, there was also a movement to revive
364-508: A similar algorithm that is based on the Julian calendar . A tropical year is approximately 365.2422 days long and a synodic month is approximately 29.5306 days long, so a tropical year is approximately 365.2422 / 29.5306 ≈ 12.36826 months long. Because 0.36826 is between 1 ⁄ 3 and 1 ⁄ 2 , a typical year of 12 months needs to be supplemented with one intercalary or leap month every 2 to 3 years. More precisely, 0.36826
416-434: A smaller scale, as classes always began in Japan with the students bowing to a portrait of the emperor, and school graduations and the opening of new schools were conducted in a manner very similar to how Kigensetsu was celebrated. When students graduated in Japan, the principal and the teachers would always give speeches to the graduating class on the theme that Japan was a special nation because its emperors were gods, and it
468-500: Is a public holiday for the purpose of "recalling the founding of the nation and cultivating a mindset of love of the nation." It is a national holiday on which each Japanese person thinks about the efforts made by our forebears from ages past in bringing the country to where it is today, and renews his or her hopes for the further development of the nation. In contrast with the events associated with earlier Kigensetsu , celebrations for National Foundation Day are relatively moderate. During
520-527: Is a solar one but the Western Christian churches use a lunar-based algorithm to determine the date of Easter and consequent movable feasts . Briefly, the date is determined with respect to the ecclesiastical full moon that follows the ecclesiastical equinox in March. (These events are almost, but not quite, the same as the actual astronomical observations.) The Eastern Christian churches have
572-547: Is no government-sponsored ceremony. However, the "National Foundation Day Celebration Central Ceremony" sponsored by the "Japan's National Foundation Day Celebration" is held every year since 2020. There is also an ambassador's attendance. The "National Foundation Day Celebration" and the "Celebration Steering Committee" reorganized into "Japan's National Foundation Day Celebration" and hold their own ceremonies. The Japan Maritime Self-Defense Force has full dressing of self-defense ships moored at bases and general ports. They hoist
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#1732775849284624-479: Is quite close to 7 ⁄ 19 (about 0.3684211): several lunisolar calendars have 7 leap months in every cycle of 19 years (called a ' Metonic cycle '). The Babylonians applied the 19-year cycle in the late sixth century BCE. Intercalation of leap months is frequently controlled by the " epact ", which is the difference between the lunar and solar years (approximately 11 days). The classic Metonic cycle can be reproduced by assigning an initial epact value of 1 to
676-549: Is the day of the promulgation of the Meiji Constitution . The origin of National Foundation Day is New Year's Day in the traditional lunisolar calendar . On that day, the foundation of Japan by the legendary Emperor Jimmu was celebrated based on the Nihon Shoki , which states that Emperor Jimmu ascended to the throne on the first day of the first month. There is, however, no compelling historical evidence that
728-569: The Chinese New Year , Lantern Festival (元宵節), Mid-Autumn Festival (中秋節), Dragon Boat Festival (端午節), and Qingming Festival (清明節) are all based upon the Chinese lunisolar calendar . In addition, the popular Chinese zodiac is a classification scheme based on the Chinese calendar that assigns an animal and its reputed attributes to each year in a repeating twelve-year cycle. The Gregorian calendar (the world's most commonly used)
780-544: The State Shinto , the nationalistic version of Shinto which is the traditional Japanese ethnic religion and its reinforcement of the Japanese nobility based on the Japanese nationalism and militarism , Kigensetsu was abolished following the surrender of Japan following World War II . In a 1948 memorandum, the chief of the occupation authorities' religious and cultural resources division, W. K. Bunce, recommended
832-529: The Sun , their leap months do not usually occur within a couple of months of perihelion , when the apparent speed of the Sun along the ecliptic is fastest (now about 3 January). This increases the usual number of common months between leap months to roughly 34 months when a doublet of common years occurs, while reducing the number to about 29 months when only a common singleton occurs. An alternative way of dealing with
884-997: The Warring States period , the Qin calendar in the Qin dynasty , the Han calendar or the Taichu calendar in the Han dynasty and Tang dynasty , the Shoushi calendar in the Yuan dynasty , and the Daming calendar in the Ming dynasty , etc. Starting in 1912, the solar calendar is used together with the lunar calendar in China. The most celebrated Chinese holidays, such as Spring Festival (Chunjie, 春節), also known as
936-471: The government of Meiji Japan designated the day as a national holiday as part of the modernization of Japan under the Meiji Restoration . Under the bakufu , people in Japan worshiped the emperors as living gods, but regional loyalties were just as strong as national loyalties, with most people feeling an equal or a stronger loyalty to the daimyō ("lord") ruling their province as they did to
988-417: The sexagenary cycle-based ganzhi system's mathematically repeating cycles of Heavenly Stems and Earthly Branches . Together with astronomical, horological, and phenological observations, definitions, measurements, and predictions of years, months, and days were refined. Astronomical phenomena and calculations emphasized especially the efforts to mathematically correlate the solar and lunar cycles from
1040-540: The shōgun who ruled from distant Edo , let alone the emperor who reigned in the equally distant city of Kyoto . Moreover, Shintoism has a number of deities, and until the Meiji Restoration, the emperors were just one of many Shinto gods, and usually not the most important. During the Meiji era, the government went out of its way to promote the imperial cult of emperor-worship as a way of ensuring that loyalty to
1092-655: The Army at once, and many objected on the grounds that they did not come from samurai families. The new holiday was introduced to help promote the imperial cult underpinning the kokutai . This coincided with the switch from the lunisolar calendar to the Gregorian calendar in 1873. The holiday was proclaimed on the Lunar New Year of 1872, on the accession of Emperor Jimmu according to the Nihon Shoki . The date
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#17327758492841144-673: The First Emperor and the Foundation of the Empire". The national holiday was supported by those who believed that focusing national attention on the emperor would serve an unifying purpose, holding the kokutai together with all Japanese people united by their love of the god-emperor. Publicly linking his rule with the legendary first emperor, Jimmu, and thus the Sun Goddess Amaterasu , Emperor Meiji declared himself
1196-581: The Hebrew calendar and the Julian calendar use this sequence. The Buddhist and Hebrew calendars restrict the leap month to a single month of the year; the number of common months between leap months is, therefore, usually 36, but occasionally only 24 months. Because the Chinese and Hindu lunisolar calendars allow the leap month to occur after or before (respectively) any month but use the true apparent motion of
1248-706: The Japanese calendar on August 11, after lobbying by the Japanese Alpine Club . It is intended to coincide with the Bon Festival vacation time, giving Japanese people an opportunity to appreciate Japan's mountains. With the Japanese imperial transition , the Emperor's Birthday was moved from December 23 to February 23 (the respective birthdays of Emperor Emeritus Akihito and Emperor Naruhito ). Due to Akihito's 2019 birthday being after his abdication but Naruhito's before his accession, this holiday
1300-704: The Public Holiday Law: Beginning in 2000, Japan implemented the Happy Monday System , which moved a number of national holidays to Monday in order to obtain a long weekend. In 2006, the country added Shōwa Day , a new national holiday, in place of Greenery Day on April 29, and to move Greenery Day to May 4. These changes took effect in 2007. In 2014, the House of Councillors decided to add Mountain Day ( 山の日 , Yama no Hi ) to
1352-464: The abolition of Kigensetsu to General Douglas MacArthur 's chief of staff, writing that: This holiday, based entirely on Shinto mythology, has been an occasion for propagandizing the divine origin and superiority of the Japanese race. Due to its official recognition of historical absurdities, it has served as a stumbling block to honest research into the early history of the Japanese people. Although some other prewar religious holidays were retained in
1404-727: The anniversary of the Constitution of Japan of 1947) and 3 April (the anniversary of the Seventeen-Article Constitution of 604). National Foundation Day was added as a national holiday by the revision of the Public Holiday Law in 1966 (Shōwa 41), and was applied from 11 February 1967 (Shōwa 42). Article 2 of the Law Concerning National Holidays (Holiday Law, Law No. 178, 20 July 1948 (国民の祝日に関する法律) ) stipulates that
1456-468: The commemoration should be absorbed into New Year's Day to lessen financial impact, author Seiichi Funahashi objected to governmental sponsorship of the holiday, and journalist Sōichi Ōya resigned from the group prior to its final meeting without contributing a vote. In addition, agronomist Azuma Okuda included a separate opinion that the holiday should celebrate the land of Japan rather than glorify its people. Two new national holidays were established at
1508-471: The concept of Yin Yang and astronomical phenomena, as movements of the sun, moon, Mercury, Venus, Mars, Jupiter and Saturn (known as the seven luminaries) are the references for the Chinese lunisolar calendar calculations. The Chinese lunisolar calendar is believed to be the origin of some variant calendars used in other neighboring countries, such as Vietnam and Korea. The traditional calendar calendars used
1560-459: The dominant caste, but the aggressive militarism of the samurai was not embraced by the other castes, who could not legally own weapons. One of the Meiji era reforms was the introduction of conscription of all able-bodied men at age 18, to serve in either the Army or the Navy. This required the ideology of Bushido ("the way of the warrior") from people who historically had been encouraged to see war as
1612-483: The exclusive concern of the samurai. The imperial cult of emperor-worship was promoted both to ensure that everyone would be a part of the kokutai and to ensure that all men embraced Bushido , and would willingly serve in the military. After conscription was introduced in 1873, a group of teenage rickshaw drivers and shop clerks were ordered to attend a lecture where they were informed that "Now that all men are samurai," they were to show "manly obedience" by enlisting in
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1664-543: The fact that a solar year does not contain an integer number of lunar months is by including uncounted time in a period of the year that is not assigned to a named month. Some Coast Salish peoples used a calendar of this kind. For instance, the Chehalis began their count of lunar months from the arrival of spawning chinook salmon (in Gregorian calendar October), and counted 10 months, leaving an uncounted period until
1716-855: The flag of the JMSDF and/or signal flags on MSDF ships and held for expressing good wishes on National Foundation Day. There are also illuminated ships after sunset. The National Foundation Day Celebration Parade is held annually in Tokyo on 11 February. Public holiday in Japan Public holidays in Japan ( 国民の祝日 , kokumin no shukujitsu ) were first established by the Public Holiday Law ( 国民の祝日に関する法律 , Kokumin no Shukujitsu ni Kansuru Hōritsu , lit. ' An Act on public holidays ' ; Act No. 178 of 1948) of 1948. It has since been amended 11 times to add additional holidays,
1768-436: The handing out of sweets and buns to children, with the highlight of the Kigensetsu always being a rally where ordinary people would kowtow to a portrait of the emperor, which was followed up by the singing of the national anthem and patriotic speeches whose principal theme was always that Japan was a uniquely virtuous nation because of its rule by the god-emperors. Kigensetsu provided the model for school ceremonies, albeit on
1820-471: The holiday, in which the Association of Shinto Shrines played a major role. The holiday was re-established as National Foundation Day in 1966 following the creation by Prime Minister Eisaku Satō of an exploratory council that was chaired by civic reformer Tsûsai Sugawara . Of the ten members of the council, seven voted to advise the prime minister to adopt the holiday; economist Genichi Abe believed
1872-451: The industry, from Christmas Eve to January 5. This case is unique in Asia. The national holidays in 2018–2024 are as follows. In addition to the annual holidays listed above, certain events of celebration or mourning related to the imperial family are also treated as national holidays in the year in which they occur. There have been six instances of such holidays since the introduction of
1924-538: The last year of the cycle and incrementing by 11 each year. Between the last year of one cycle and the first year of the next the increment is 12 – the saltus lunae ( Latin for 'leap of the moon') – which causes the epacts to repeat every 19 years. When the epact reaches 30 or higher, an intercalary month is added and 30 is subtracted. The Metonic cycle states that 7 of 19 years will contain an additional intercalary month and those years are numbered: 3, 6, 8, 11, 14, 17 and 19. Both
1976-412: The latest being in 2018, for a total of 16 recognized holidays. Article 3 of this law specifies that when a national holiday falls on a Sunday, the next working day shall become a public holiday, known as furikae kyūjitsu ( 振替休日 , "compensatory public holiday", literally "substitute holiday") . Article 3 also determines that any day that falls between two other national holidays shall also become
2028-560: The legendary Emperor Jimmu actually existed. Emperor Kinmei (539–571) is the earliest generally agreed upon historical ruler of Japan. During the Kofun period (300–538), Yamato was the first central government of the unified state in the Kinai region of central Japan. The first historical records did not appear until the 8th century, with the Kojiki and Nihon Shoki . In the Meiji era ,
2080-493: The national government in Tokyo would outweigh regional loyalties. Moreover, the process of modernization in Meiji era Japan was intended to ensure that Japan adopted Western technology, science and models of social organization, not the values of the West; it was a fear of the government that the Japanese people might embrace Western values like democracy and individualism. This led the government to insist that all Japanese should hold
2132-454: The one, true ruler of Japan. The claim that the emperors of Japan were gods was based upon their supposed descent from Amaterasu , the most important of the Shinto gods and goddesses. With large parades and festivals, in its time, Kigensetsu was considered one of the four major holidays of Japan. The holiday of Kigensetsu featured parades, athletic competitions, the public reading of poems,
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2184-479: The perspective of the earth, which however are known to require some degree of numeric approximation or compromise. The earliest record of the Chinese lunisolar calendar was in the Zhou dynasty (1050 BC – 771 BC, around 3000 years ago. Throughout history, the Chinese lunisolar calendar had many variations and evolved with different dynasties with increasing accuracy, including the "six ancient calendars" in
2236-463: The post- war period and up to 2000, there were two opposing sentiments: a caution to prevent ultra-nationalism and a desire to revive cultural traditions. As such people generally didn't overtly express nationalism or patriotism in public. As a public holiday , government offices, schools, banks, and many companies are closed. On the day of the event, festivals such as the "kenkoku-sai" (建国祭) are held at ( Shinto shrines and Buddhist temples ). There
2288-445: The purpose of National Foundation Day is to: Nourish a love for the country by commemorating the establishment of the country. This day is to commemorate the founding of the country, regardless of the day it was founded. The Prime Minister of Japan makes speeches and statements about the importance of National Foundation Day. For example, in 2018, former Prime Minister Shinzo Abe made an official statement: National Foundation Day
2340-443: The rural areas was due to the fact that the children of most peasants did not attend school or at least for very long, and it was only with the gradual establishment of a universal education system that the imperial cult caught on. Between the 1870s to the 1890s, all of the rural areas of Japan finally acquired a school, which allowed everyone to be educated. It was only about 1910 that Kigensetsu finally started to serve its purpose as
2392-716: The same time: Respect for the Aged Day on September 15, and Sports Day on October 10. In a 1966 public opinion poll conducted by the Public Relations Office of the Prime Minister's Office at the request of the National Foundation Day Council, nearly half of the 8,700 respondents (47.4%) favored 11 February as the date of National Foundation Day, with the next most popular choices being 3 May ( Constitution Memorial Day ,
2444-401: The same values, with any heterodoxy viewed as a threat to the kokutai . The American historian Carol Gluck noted that for the Japanese state in the Meiji era, "social conformity" was the highest value, with dissent considered a major threat to the kokutai . Up to 1871, Japanese society was divided into four castes: the samurai , the merchants, the artisans and the peasants. The samurai were
2496-490: The seasons. The Chinese , Buddhist , Burmese , Assyrian , Hebrew , Jain and Kurdish as well as the traditional Nepali, Hindu , Japanese , Korean , Mongolian , Tibetan , and Vietnamese calendars (in the East Asian Chinese cultural sphere ), plus the ancient Hellenic , Coligny , and Babylonian calendars are all lunisolar. Also, some of the ancient pre-Islamic calendars in south Arabia followed
2548-464: Was 29 January 1873 of the Gregorian calendar, but later that year it was changed to 11 February, probably to avoid conflict with the celebrations of Lunar New Year. 11 February was also the day when the Constitution of the Empire of Japan was proclaimed in 1889. In its original form, the holiday was named Kigensetsu ( 紀元節 ) , translated by one pre-war scholar as "Festival of the Accession of
2600-493: Was Emperor Meiji's birthday. It was not until about 1900 that everyone in the rural areas of Japan finally understood the meaning of Kigensetsu . Aizawa, the same deputy mayor who in 1897 who thought the holiday was Emperor Meiji's birthday, later become the mayor, in 1903 gave his first Kigensetsu speech at the local school, and in 1905 he organized a free banquet to go along with Kigensetsu , which become an annual tradition in his village. The slow penetration of Kigensetsu in
2652-591: Was not celebrated in 2019. As special arrangement for the 2020 Summer Olympics , the 2020 dates for Marine Day, Sports Day, and Mountain Day were moved to July 23, July 24, and August 10 respectively. With the Olympics and Paralympics postponed until 2021 due to the COVID-19 pandemic , the government left this change in place for 2020 and passed an amendment to the Olympic and Paralympic Special Measures Act to make
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#17327758492842704-400: Was the duty of every student to serve the god-emperor. Reflecting the fact that for most Japanese people under the bakufu regional loyalties were stronger than national loyalties, in the 1880s and 1890s, there was some confusion in the rural areas of Japan about just what precisely Kigensetsu was meant to celebrate, with one deputy mayor of a small village in 1897 believing that Kigensetsu
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