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A Synodic Day (or synodic rotation period or solar day) is the period for a celestial object to rotate once in relation to the star it is orbiting,...

A Synodic Day (or synodic rotation period or solar day) is the period for a celestial object to rotate once in relation to the star it is orbiting,...

Saros' Period: The period of about 18 years and 10 days after which the solar and lunar eclipses take place. Handmade in Germany using the calculat...

The Moon's Culmination Cycle: The time span from one passage of the Moon through the south to the next. The Moon rises every day on average about 5...

A Synodic Day (or synodic rotation period or solar day) is the period for a celestial object to rotate once in relation to the star it is orbiting,...