Day drove his courser with the shining mane.”
Balder Dead (Matthew Arnold).
The Wolves Sköll and Hati
But as evil always treads close upon the footsteps of good, hoping to destroy it, the ancient inhabitants of the Northern regions imagined that both Sun and Moon were incessantly pursued by the fierce wolves Sköll (repulsion) and Hati (hatred), whose sole aim was to overtake and swallow the brilliant objects before them, so that the world might again be enveloped in its primeval darkness.
“Sköll the wolf is named
That the fair-faced goddess
To the ocean chases;
Another Hati hight
He is Hrodvitnir’s son;
He the bright maid of heaven shall precede.”