How close to “completely across the solar system” are they?
Our moon is a small crescent but the 2 planets are complete disks now so they relatively on the other side of the sun from us.(?)
When the planets outside earth are on the opposite side of the sun they would be overhead during day time.
Post 8 shows it. If you were looking at the post 8 diagram from above the orbit plane. you would be looking down on Earth’s north pole and Earth would be spinning CCW and orbiting the Sun CCW. So you can see why now Jupiter and Saturn are visible now just after sunset. Soon they will be overhead in day time.