"You cut openings for springs and torrents;
you dried up ever-flowing streams.
16 Yours is the day, yours also the night;
you established the luminaries[d] and the sun.
17 You have fixed all the bounds of the earth;
you made summer and winter."
If you read all of Psalm 74, you will see that it's a Psalm of lament, written by a people who are suffering. They pray not to be abandoned by God.
In the context of their sorrow, trauma, and fear, verses 15-17 acknowledge that God is in control. "Think about the Earth," the Psalmist seems to say. "Day and night belong to God. It's God that puts things in place, controls the flow of water, and even sets the stars in place. This God who is in control does not abandon us, even when it feels like it."
It's so easy in this world of ours to feel scared, alone, and even abandoned. But the God of creation is always there. Sometimes calling out to God is the first step toward remembering that he always hears us.