Coordinate term: ELT

Tell him, I am prompt / To lay my Crowne at's feete, and there to kneele.

Polar wander can be used to measure the degree to which Earth's magnetic poles have been observed to move relative to the Earth's rotation axis.

Scarcely a score of years after the passing of the Prince of Music, in spite of so many authoritative fillips on the ear, the chromatic cat came back with all its slurred miauling and was heard once more on the musical stage, this time puffed up in an array of hysteric sounds of augmented, diminished, tritoned and disconnected “daring skips”, forsooth a veritable harlequin exhibition of variegated disharmonies.