Summarizing so far: We would have two people interested in either a 1.30 PM UTC or 6.30 PM UTC starting time (or somewhere in-between).
We can either keep the original Starfinder Society #2-15: The Infernal Gallery - though in this case there'll likely only be two players.
Or we can try another one so potentially Robb and Bruce can join (though that's in no way guaranteed).
Options would e.g. be
Starfinder Society #1-00: Claim to Salvation (4th level pregens)
Starfinder Society Scenario #1-22: The Protectorate Petition (1-4)
Starfinder Society Scenario #1-24: Siege of Enlightenment (1-4)
Starfinder Society Scenario #1-28: It Rests Beneath (1-4)
Any preferences?
Update: Robb and Bruce are out, so the main question is whether the other two want to go ahead with two players and two pregens (and if so, which starting time).