At sunrise.
The city that Sam picked, which he called the First-target is currently full of preparations. Even though Dayus decided to let Sam have this, he really didn't want to give up without a fight. Particularly, when he didn't have to stick out his neck on his own.
He sent one of the Zeus academy members there along with a high level mercenary team to defend.
Their job was just that.
To defend no matter what attacks are thrown by Sam, they are to defend and to defend only. There is no other task for them.
So, they brought up every single defensive formation that they could install in those few hours and finished it. Waiting for the sun to raise.
Exactly the moment, the sun rose. Sam appeared in their line of sight. Coming in on his harbinger.
He threw the harbinger into his storage when he came to the vicinity of the city. He then flew over the over the city, stopping exactly at its center.