When God created the heavens and the earth, he first created light. Then there was evening and there was morning, the first day. Then God spoke and the waters separated to become the sky and the seas. Then there was evening and there was morning, the second day. Then God spoke and land appeared. He also created vegetation and plants. Then there was evening and there was morning, the third day. Then God spoke and he created lights in the sky to mark seasons, days and years. The bigger light that ruled the day was called the sun and the smaller one that ruled the night was called moon.
Notice that God was already counting days and nights even before the creation of the sun and moon.
So what is deeper meaning of days and nights?
God created during the day and there was no activity at night. Days are then times of activity, God's activity. Night is an activity of creation. If we are God's people, we act when God is active. We cooperate with the Lord during the day and let the events take their course during the night. We have to believe that God is in control and events happen for a specific reason (although I personally believe that when the Lord acts, he has at least two reasons, which shows God's wisdom). God uses the events to lead us to his will.
If we are in the Lord, there is no such thing as wrong discernment. Because “here is no condemnation for those who are in Christ Jesus.” Even if we discerned wrongly and acted against God's plan, as long as the decision was made in trust and humility, God will lead us back. Mother Teresa once said, “God did not ask me to be successful. He asked me to be faithful.” Only Jesus can perfectly discern God's will.
Therefore if we make a wrong decision, the events will lead us back to the right way. God always is victorious and we who are in him are always victorious!