From this link:
Calvin also reminds us that Paul states that the love God had for us before the creation of the world had always been founded in Christ
From this link:
Calvinists believe that God picked those who he will save and bring with him to Heaven before the world was created
From this link:
Election is an act of God before creation
From this link:
Reprobation is the sovereign decision of God before creation
From the sentences of the quotes above lead me to think that Calvinist teach that the U (from Unconditional Election) is before the creation
but because in my other question, there is a comment like this :
Neither scripture nor Calvin make any statements about mankind before it is created. It would be illogical to do so.
That's why I ask the question.