[Robert A Cook PE]

You’re looking at a 24-hour exposure of the sun, with all of that sunlight only becoming a simple “stripe”.

Even a truck parked in front of the pinhole camera for an hour would “show” as a “dark spot” across the sun’s stripe for that day (one day’s declination angle is between each track) for that one hour.

[zeestephen]

Thanks, Mr. Cook, but I still don’t get it.

The photo is a three month exposure, not 24 hours.

And clouds permanently blot out parts of the “sun streaks,” so why wouldn’t a truck driving in front of the house permanently block out our view of the house?

Unless, that is not a road in front of the house, and for three months nothing actually blocked our view.