The Bible does not give a date
Genesis begins with God creating heaven and earth, but it does not pause to tell us when angels were made (Genesis 1:1). Some people try to place their creation within one of the six days, while others think God created them before those days began. The passage itself does not settle that question.
God does not leave us with nothing, though. In his speech to Job from the whirlwind, God describes heavenly beings rejoicing as the foundations of the earth were laid. In Job, the phrase “sons of God” is also used for beings who present themselves before the Lord, which is why many readers understand them here as angels (Job 1:6; Job 38:7).
When the morning stars sang together, and all the sons of God shouted for joy?
Angels are created, not eternal
Only God has always existed. Angels are real spiritual creatures, but they belong to creation. Psalm 148 calls on angels to praise the Lord and explains that he commanded, and they were created (Psalm 148:2; Psalm 148:5).
Paul makes the same central point when he writes that all things were created through and for Christ, including things that cannot be seen. His mention of thrones, dominions, principalities, and powers shows that no spiritual authority exists independently of Christ (Colossians 1:16).
For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him:
What we can say with confidence
The clearest biblical conclusion is simple: angels existed when God established the earth, so they were created before that moment. But the Bible does not tell us how long before, nor does it give an exact sequence for their creation. It is wise not to claim more than Scripture says.
That mystery does not make the answer empty. It points to God as Creator over both the visible world we know and the unseen spiritual world. Angels serve his purposes, and they are not rivals to him or objects of worship (Hebrews 1:14; Revelation 19:10).
Keep the main thing central
Questions about angels can stir the imagination. Still, the Bible consistently turns our attention back to God himself. The heavenly beings in God’s speech to Job are not the centre of the story. They are worshippers, delighted by the wisdom and power of the One who made the world.
So, when did God create them? Before the earth’s foundations were laid, as far as the Bible lets us see. For the precise moment, Scripture is quiet. Reading Job 38 and Psalm 148 slowly can help keep both truths together: God has revealed enough to trust him, and some details remain his alone.