1 Enoch

And the leaders of the heads of the thousands, who are placed over the whole creation and over all the stars, have also to do with the four intercalary days, being inseparable from their office, according to the reckoning of the year, and these render service on the four days which are not reckoned in the reckoning of the year.

And owing to them men go wrong therein, for those luminaries truly render service on the world-stations, one in the first portal, one in the third portal of the heaven , one in the fourth portal, and one in the sixth portal, and the exactness of the year is accomplished through its separate three hundred and sixty-four stations.