2. Analemma

4. Time Mean Solar Time: Time based on the average time between meridian crossings of the Sun. Each day is exactly 24 hours. Apparent Solar Time: The actual hour angle of the Sun + 12 hours Sidereal Time: The hour angle of the vernal equinox. Repeats every 23 hr 56 min 4 sec.

5. Moon Orbits the Earth

6. Lunar Phases

7. Moon’s Rotation Matches Orbit Sidereal rotation period is the same as the sidereal orbital period: 27.3 days Moon shows the same “face” to the Earth Caused by Earth’s tidal force on the Moon

8. Lunar Month Based on the motion of the Moon around the Earth Sidereal month: 27.321662 days. Defined relative to the stars. Synodic month: 29.530589 days Phase period; New Moon to New Moon

9. Synodic vs. Sidereal Month

10. The Moon from Earth