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The earth completes one axial rotation every 23hours 56minutes 4seconds. (rounded)

Just to reduce our sweat without affecting the answer by much, let's call it 24 hours.

We can massage it to yield:

1 rev per day = 15 degrees per hour = 0.25 degree per minute

= 2 pi radians / 24 hours = pi radians per 12 hours

= 0.2618 radian per hour

= 4.363 milliradians per minute

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Q: What is the angular velocity of the diurnal cycle?
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