Sorry about the bloody mess. Someone made me aware of the difference between Eastern Standard Time and Eastern Daylight Time, leading to tons of confusion.
What I, and some people thought was going on: It began at 5:15 (EDT), and it ended 8:00 (EDT).
What was technically right by the statements: It should have began at 6:15 EDT, and it should have ended 9:00 EDT.
When I got back to update the spreadsheet, I mistakenly thought that the round had ended, due to the EST/EDT difference that someone in the sheet made me aware of. There are two ways to approach this: Go with what's technically right, and try to fix stuff, or to declare dictatorship in the interests of a clean solution. In the interests of being straightforward, I went for remediation in the name of truth.
Sorry about the mixup guys.
Edit: I'll run a 48 hour round from 10:00 ED
T today until 10:00 EDT on June 24th.