[skywal_l]

Contrary to windmills, which slows down the rotation of the earth.

[margalabargala]

Doesn't that depend whether you point them east or west?

Point them north and you'll increase Earth's axial tilt.

[hedgehog]

I think you just solved both leap seconds and daylight savings time.

[triceratops]

I personally would like more hours in the day.

[Garlef]

No problem: Just build a subterranean boat and launch a few nukes close to the core to restart rotation.

[munk-a]

Won't someone think of the ~children~ birds?!