What are the odds of the optimal deal being reached on Trump's birthday (Eastern Time)? Who knows, maybe US stalled before, and/or gave a little extra concession to conclude today.

You are probably right it was timed deliberately this way, this is why the Iranians also didn't rush it ...

> Iran waited until the clock passed midnight local time to finalize the agreement, because it did not want the momentous occasion to coincide with President Trump’s birthday on Sunday, according to two Iranian officials who could not be identified because of the matter’s sensitivity. The seven-and-half-hour time difference allowed both Tehran and Washington to claim their preferred version of when the deal was finalized. President Trump had said it would be on Sunday, and Iran had said it would be on a later day.[0]

[0]https://www.nytimes.com/live/2026/06/14/world/iran-war-trump...