I was a bit annoyed that my one spare day in Tokyo was a rainy one.  I didn’t have any great plans for the day other than getting adjusted to the time but, when I knew it was raining, I almost didn’t even bother with Haneda.  However, in the absence of another plan, I decided to go.  The thing I liked about it was that, with the rain falling, the runway was wet.  This resulted in a lot of moisture being thrown up in the air by the jets as they reversed thrust.  Some went for minimum reverse but others went for a bunch of throttle as they aimed to stop in time for the exit they were aiming for.