the Nikkei

Yeah, I still trade the Nikkei on occasion as its in my timezone.
I trade the Nikkei through SIMEX, the cash shut for lunch at 11:00am and re-open at 12:30 (Tokyo time)
Futures close at 11:15 and re-open at 12:15.
Futures on simex also stay open for 1/2 an hour after the cash closes (3pm), whereas the futures traded in Osaka trade for 10mins after the close (3:10)

Guess that provides some info for ya.