Midrash sa Mga Awit 19:6: Otzar Midrashim, Pirkei DeRabbi Eliezer, Bamidbar Rabbah & Shemot Rabbah

Opposition 8) And a time to build - The sun to rule by day, just as the sun goes forth with strength, as it says "It rejoices like a mighty man to run it's course" (Psalms 19:6), and so too a building is only seen by day when the sun comes out. And just as the sun - even though it knows it will rise and set and be extinguished from the world, nonetheless it goes forth and illuminates the world - so too man knows he is going to die and be covered from the world, nonetheless he does not refrain from building, and the sun likewise does not refrain from illuminating the world, for His kindness endures forever.

The great cycle of the sun is 28 years, and therein are seven small cycles each of four years. The number of days of the solar year is 365 and a quarter of a day. The seasons of the solar year are four, each season (consisting of) 91 days 7½ hours. The beginnings of the cycles of the seasons are the 4th, 2nd, 7th, 5th, 3rd, 1st, and 6th (days). Between each cycle there are 5 days and 6 (hours).

The aperture which is in the midst of the firmament is named M'zarim and (the sun) does not go forth or set therein except once in its great cycle; (thereon) it goes through it as on the day when it was created. At night the sun is in the west. At the Teḳuphah of Tishri and at the Teḳuphah of Ṭebeth the sun goes on its course in the south quarter and in the waters of the Ocean (which are) between the ends of the heavens and the ends of the earth where it is submerged. For the night is long and the way is long until (the sun) reaches the aperture which is in the east, (even) the aperture through which it desires to go forth, as it is said, "It goeth toward the south, and turneth about unto the north" (Eccles. 1:6). It goes to the south at the Teḳuphah of Tishri and at the Teḳuphah of Ṭebeth, and turns to the north at the Teḳuphah of Nisan and at the Teḳuphah of Tammuz. It goes on its course for six months in the south quarter, and for six months in the north quarter, and owing to its circuits the sun returns to the aperture which is in the east. The sun has three letters of (God's) Name written upon his heart, and the angels lead him; such || as lead him by day do not lead him by night, and such as lead him by night do not lead him by day. The sun rides in a chariot and rises, crowned as a bridegroom, as it is said, "Which is as a bridegroom coming out of his chamber, and rejoiceth as a strong man to run his course" (Ps. 19:5). The sun's rays and face, which are turned downwards (to the earth), are of hail; and were it not for the hail which quenches the flames of fire the world would be consumed by fire, as it is said, "And there is nothing hid from the heat thereof" (Ps. 19:6). In winter (the sun) turns the upper (half of) his face downwards, and were it not for the fire which warms the face of hail the world could not endure because of the ice (cold), as it is said, "Who can stand before his cold?" (Ps. 147:17). These are the ends of the ways of the sun.