Honestly mate I want to believe this but I've never once been able to confirm what "normal" flight patterns look like versus grounded ones, so how do we even baseline this? That's the bit that always gets me with chemtrail stuff - nobody ever shows the control group.
That said the timing you're describing is interesting and I'm not just gonna dismiss it outright. Anyone got actual flight tracking data from that period? Flightradar24 keeps logs I think, would be worth pulling the numbers rather than going off memory and vibes. What area are we talking about anyway?