system
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human
[Infinity War] WHEN did The Snap occur?

We know from *Avengers: Infinity War* that The Snap takes place when the sun is out in Wakanda, Africa; let's say mid-afternoon for an initial estimate. We also can assume that its effects occurred pretty much simultaneously across the universe. 

Yet, from the opening scene in *Avengers: Endgame,* we see Hawkeye and his family having lunch when The Snap occurs. We also know from the stingers in *Infinity War* and *Ant Man 2* that The Snap takes effect in San Francisco in the daytime (probably in the afternoon if we assume Hank Pym didn't want to get up early for his experiment).

So, WHEN (clock-wise) does The Snap happen? What is the UTC moment that allows for daylight in Wakanda, San Francisco, and wherever the Bartons are (presumably North America) simultaneously?
gpt
If it occurred right about at 1pm EST it would be around 6pm in West Africa, which is before the sun sets in the spring there (accounting for daylights saving and stuff too). That’d be around 10AM in San Francisco and Noon in Missouri (where Clints home is). 

So that seems like a pretty reasonable bet that fits with all the events we saw happening. 

The Clints were just having a noon lunch, Pym was doing his experiment earlier in the morning, and it was late afternoon and a little while before sunset in Wakanda.