I've heard that Sundays, Mondays, and Tuesdays are not very good nights to eat sushi in L.A. because the fish market is closed on those days.
I've also heard that there's an easy way to remember 'best days to eat sushi.' I can't really remember what it was but, I *think* that it said any day with an 'R' in it is good.
However, I can't figure out Wednesday! Is Wednesday night a great night to have sushi in L.A.?