檔案:Gregoriancalendarleap solstice.svg

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Mèu-sut
English: The date of the northern summer solstice between 1750 and 2250. The graph shows the date (in GMT) of the northern summer solstice (the moment the sun reaches it northernmost position in the sky, or the beginning of summer in the northern hemisphere) through the years. As the summer solstice occurs on the same astronomical date each year (although changes may occur on much larger time scales), the graph basically shows the difference between real, astronomical time and the Gregorian calendar. Each year, the Gregorian calendar is approximately 0.24 days faster than the astronomical calendar, which is corrected by a leap day once every four years. This 4-year cycle is clearly visible in the graph. To compensate for the largest part of the remainder of the difference, there is no leap year in 1800, 1900, 2100, 2200, as can be clearly seen in the graph, too. Note that the summer solstice in 1800 and in 2200 are not on equal dates; this shows that the leap year compensation as described before is not perfect and more complicated schemes are necessary to keep the Gregorian calendar synchronized over even longer time scales. However, the Gregorian calendar was actually intended to synchronize with the vernal equinox, not the summer solstice, which is not exactly the same thing over the medium term...
Ngit-khì
Lòi-ngièn Chhṳ-kâ ke chok-phín; The data was generated by Astrolabe (https://sourceforge.net/projects/astrolabegenera), which uses the algorithms described in Jean Meeus's "Astronomical Algorithms" (ISBN 978-0943396613). The data have an error of less than 2.6 minutes.
Chok-chá BasZoetekouw; spelling corrections and revision of subtitle by User:Gerry Ashton on 14 September 2008.
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作者姓名字串 繁體中文: BasZoetekouw

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檔案來源 Chinese (Taiwan) (已轉換拼寫)

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6 9 2008

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Vùn-khien li̍t-sṳ́

Tiám-khim ngit-khì / sṳ̀-kiên lòi chhà-khon tông-sṳ̀ chhut-hien-ko ke vùn-khien.

Ngit khì / Sṳ̀-kiênSuk-lio̍k-thùVì-thuYung-fuYi-kien
tông-chhièn2024年2月28日 (Sâm) 11:252024年2月28日 (Sâm) 11:25 ke pán-pún ke Suk-lio̍k-thù800 × 420(87 KB)DemonocrazyFile uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for eu.
2023年3月3日 (Ńg) 19:002023年3月3日 (Ńg) 19:00 ke pán-pún ke Suk-lio̍k-thù800 × 420(87 KB)A8761750 – 2250 is 500 years, not 400.
2022年1月10日 (Yit) 18:562022年1月10日 (Yit) 18:56 ke pán-pún ke Suk-lio̍k-thù800 × 420(87 KB)KurmanbekFile uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for tr.
2008年9月15日 (Yit) 00:462008年9月15日 (Yit) 00:46 ke pán-pún ke Suk-lio̍k-thù800 × 420(112 KB)Gerry Ashton{{Information |Description= |Source= |Date= |Author= |Permission= |other_versions= }}
2008年9月14日 (Ngit) 18:042008年9月14日 (Ngit) 18:04 ke pán-pún ke Suk-lio̍k-thù800 × 420(112 KB)Gerry AshtonCapitalize the word "Gregorian".
2008年9月6日 (Liuk) 13:302008年9月6日 (Liuk) 13:30 ke pán-pún ke Suk-lio̍k-thù800 × 420(112 KB)Baszoetekouw{{Information |Description= |Source= |Date= |Author= |Permission= |other_versions= }}
2008年9月6日 (Liuk) 13:192008年9月6日 (Liuk) 13:19 ke pán-pún ke Suk-lio̍k-thù512 × 234(57 KB)Baszoetekouw{{Information |Description={{en|1=The date of the summer solstice between 1750 and 2250. The data was generated by Astrolabe (http://astrolabe.sourceforge.net/), which uses the algorithms described in Jean Meeus's "Astronomical Algorithms" (ISBN 978-0943

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