Greetings society members
I've just returned from a fall trip to the beach. Behold our glorious flat earth.
This photo was taken almost precisely 24 hours after a total lunar eclipse (which, sadly I wasn't able to see) where the full, eclipsed moon and sun were both visible above the horizon (Something that geometry says isn't possible on a spherical earth). Here, 24 hours past the full moon, the sun is rising over the sea. Behind me, the moon (still largely full, barely 24 hours into the waning period) is high in the sky. Here's a shot of the moon in the opposite direction, so you can see what I mean.
I thought I'd been able to get the horizon into the bottom of the shot (oops), but you can basically see where it is (just below the trees). By using the height of my hand at arm's length as as estimate for 10 degrees, I estimated the moon's position at about 35 degrees above the horizon when the sun rose, making the angle between the sun and moon in the sky about 150 degrees, when it should have been closer to 180. At full moon, the angle between the sun and moon on the sky is 180. The moon doesn't cover 35 degrees of sky relative to the sun in a single day. If it did, there would be a full moon every 10 days. I couldn't get a panoramic shot with my phone, or I would have, because it was awesome.