The azan calls Muslims to prayer five times per day, so it’s not something that Darius or Sohrab necessarily have to pay attention to. Still, Darius recognizes that it’s a unifying fact of life in a Muslim country like Iran—and for all the country’s faults, he finds it touching that there’s this major unifying event to everyone’s day. As Darius and Sohrab discuss religion, Darius learns how to navigate a slightly trickier subject with a new friend. He suggests that at least for him, religion isn’t wholly necessary when one has friends (or supportive family), highlighting how much Darius is getting out of his friendship with Sohrab.