Its a Japanese holiday today, does that mean we can't hear from the BOJ?

TL;DR - No, it doesn't.

We still haven't seen intervention from the BOJ apart from jawboning and yesterday's 'rate check' (I should be more precise, they are both forms of intervention ... but the BOJ hasn't spent any money yet .... when they do, that's intervention :-D )

With Japan on holidays, does it mean the Bank of Japan cannot do another rate check, or jaw bone, or intervene? No, it doesn't

Yesterday I made the mistake of asking a market professional how his break for Chinese New Year was. He replied, sternly, that money never sleeps and he was at the desk for 12-odd hours each day of the holiday. yep.

So, you can be sure that the BOJ is watching what's happening and is not far away from the phones and terminals.

No guarantees on any form of intervention, but there is a high probability of something.