Moon Phase in San Francisco
Live astronomical calculations for tonight's lunar phase, surface illumination percentage, moon age in days, and milestone full moon countdown in San Francisco. Coordinates: 37.7749°, -122.4194° (America/Los_Angeles).
San Francisco, United States
Lat 37.77°, Lng -122.42° • Synodic Lunar CycleWaxing Crescent
Moon Age: 2.5 days into 29.5-day synodic cycle
How the Moon Appears from San Francisco
While the physical percentage of the Moon lit by the Sun is universal across the entire globe, the visual angle and orientation of the illuminated crescent in the night sky depend entirely on your vantage point in San Francisco (37.77° latitude):
Facing south, waxing crescents are lit on the right side ("D" shape), while waning crescents appear on the left ("C" shape).
At latitude 37.77°, the Moon follows an inclined path across the sky with pronounced tilted illumination angles.
From San Francisco, the Moon cycles through all 8 phases over 29 days, 12 hours, and 44 minutes, synchronizing tide cycles and night-sky luminosity.
Frequently Asked Questions: Moon in San Francisco
Learn how lunar ephemeris and orbital geometry shape nighttime viewing in San Francisco.
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