Venus
The Earth rotates 360 degrees in a 24-hour period, so in a 12-hour period, it would rotate 180 degrees on its axis.
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rotates 180 degrees
It rotates in the "retrograde" direction. "Obliquity" is another way of talking about the tilt of a planet's axis. You might say the planet is "upside down". The direction of the rotation is called "retrograde" ("backwards" compared with the Earth's rotation). Note: there is a complication here about how astronomers define the North pole of a planet, but that's probably an unnecessary complication for most people.
Uranus is the only planet which rotates on its side, with an axial tilt of 97.86 degrees.
Uranus.
180 degrees longitude - is the international dateline. It is on the opposite side of the planet to the Prime Meridian - which passes through Greenwich, England.
It rotates 90 degrees.
A planet rotates on its axis, an imaginary line that runs from its North Pole to its South Pole. This rotation determines the length of a day on the planet.
Uranus is the planet that rotates on its side. Its axis is tilted at an angle of about 98 degrees relative to its orbit around the Sun, causing it to essentially roll on its side as it orbits.
Uranus is the planet that rotates at about a 90-degree angle compared to the other planets in our solar system. This unique tilt causes Uranus to essentially roll on its side as it orbits the Sun.
Uranus is the planet that rotates on its side, with an axial tilt of about 98 degrees. This unusual tilt causes extreme seasonal variations on Uranus, where one pole can be in constant sunlight while the other experiences continuous darkness for long periods.