MonkeyWerx. I heard it myself https://www.youtube.com/watch?v=Yk0OGDKniaI
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Strange. Reagan says it’s closed for cleaning, yet the indication by MonkeyWerx is that there is no traffic near DC, which would probably include Dulles.
He indicates that everything is closed down in DC area.
“Reagan says it’s closed for cleaning”
Went to their site, saw nothing about cleaning.
Arrivals and Departures button shows flights coming and going as usual.
Here is a version you can view. I did see at least one flight land at Dulles. Not a lot of planes right over DC, but I suppose there shouldnt be.
Live Flight Tracker - FlightAware