According to Caltech, some 20 million people felt Sunday’s 3:20 p.m. earthquake, at 7.2 magnitude the biggest quake here since the Landers in 1992. Where were you Sunday and what did you see or feel, if anything?

I was on my computer at home and it felt as though something — a bull, say — had butted against the house. Then it seemed like a giant was gently twisting the house back and forth, as if rocking it to sleep. I was surprised how long the sensation lasted. I got up and walked into the living room to make sure nothing important was teetering.

Then it was all over, except for a hanging light fixture swaying slowly for several more seconds.