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Dates of solar eclipses in XXI century
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DescriptionDates of solar eclipses in XXI century.png |
English: Histogram of dates of solar eclipses in 21st century. The dates form 35 clusters. Each cluster contains eclipses separated by Metonic cycles of 19 years. Each series contains four or five eclipses, and 65 or 84 years after the first one another series starts about a day and a half later in the (Julian) year. This means that the clusters slowly move forward in date (to later dates). In a saros series, every 18 years the eclipse moves to the next later cluster. After 631 years (35 saros) it comes back to the original cluster, which by then has moved, in the Julian calendar, to a date about 13 or 14 days later, or about 18 days later in the Gregorian calendar. Eclipses in an inex series move backwards by two clusters each time (29 years). After 1013 years (35 inex) the eclipse comes back to the original cluster, having gone around twice but skipping over the original cluster the first time around. When it gets back to the original cluster, that cluster has moved about 20 days later in the Julian calendar (27 or 28 in the Gregorian calendar). Following a ratio of around 10 inex for every saros (thereby staying with central eclipses), the movement is in the Julian calendar is 1.99 days per century on average. |
Date | |
Source | Data are from Catalog of Solar Eclipses: 2001 to 2100 |
Author | Eric Kvaalen |
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