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SunspotsLunar Eclipses

A.3 Solar Eclipses (240 every century; occur in daylight)

New moons occur on the Julian days 2449129.09 + 29.53058885 n ± 0.5, where n is an integer. Note 2415020.00 = 1900 January 0.50 (UT); 2444239.00 = 1980 January 0.50 (UT); 2449129.09 = 1993 May 21.59 (UT); and 2451544.00 = 2000 January 0.50 (UT).

Solar eclipses are a special case of new moons, and occur when n mod 223 appears as shown in the next table.

0, 6, 12, 18, 24, 30, 36, 42,

47, 53, 59, 65, 71, 77, 83, 89,

88, 94, 100, 106, 112, 118, 124, 130,

135, 141, 147, 153, 159, 165, 171, 177,

182, 188, 194, 200, 206, 212, 218

The cycle repeats after 223 synodic months; that is, after 18 years, 11 (10) days, 8 hours assuming the 18 years includes four (five) leap years.

Total solar eclipses last up to 7.6 minutes. Annular solar eclipses last up to 12.5 minutes.

See SolarEclipse[neardate], EclipseBegin[Earth, Moon, Sun, neardate], EclipseBegin[Sun, Moon, TopoCentric, neardate].

SunspotsLunar Eclipses



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