November 1975 lunar eclipse
| Total eclipse | |||||||||||||||||
The Moon's hourly motion shown right to left | |||||||||||||||||
| Date | November 18, 1975 | ||||||||||||||||
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| Gamma | −0.4134 | ||||||||||||||||
| Magnitude | 1.0642 | ||||||||||||||||
| Saros cycle | 135 (21 of 71) | ||||||||||||||||
| Totality | 40 minutes, 11 seconds | ||||||||||||||||
| Partiality | 209 minutes, 0 seconds | ||||||||||||||||
| Penumbral | 352 minutes, 7 seconds | ||||||||||||||||
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A total lunar eclipse occurred at the Moon’s descending node of orbit on Tuesday, November 18, 1975, with an umbral magnitude of 1.0642. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 4.9 days after apogee (on November 14, 1975, at 0:00 UTC), the Moon's apparent diameter was smaller.