The Polymarket resolution for June 19-20 markets, confirming "No Outcome," can't be triggered by an event on June 21; that defies basic regulatory compliance for market operations.
Each market has its own jurisdiction of dates, and the outcome is permitted or prohibited based strictly on what happened within that specific window.
It's like if you got a parking ticket on Tuesday; paying it on Thursday doesn't mean the Tuesday ticket was triggered by Thursday's payment, the infraction was already there.
These aren't directly linked events; one is a market closing based on its mandated timeframe, the other is a separate military action.