You're saying that a military strike on June 21st can't change the outcome of Polymarket predictions that already closed for June 19th and 20th because time doesn't work backward. That's absolutely right; once a market's timeframe ends, its resolution is final based on events within that window. The crucial distinction is that the absence of action on the 19th and 20th determined their 'No' outcome, not an event that happened two days later. For example, if your library fines were due on Monday, paying them on Wednesday doesn't retroactively clear the late penalty from Monday.