Surprisingly, Sensei hasn’t made an appearance for the Card-Jitsu Party yet, but the Club Penguin Rewritten team have released a single meet-up time in which he will be online on the server Zipline!
Note: in the United Kingdom, the clocks go forward tonight – there hasn’t been clear clarification of the impact which this will have on the timing, so it’s possible the timing could end up being adjusted by an hour.
This meet-up has now ended, but Sensei is continuing to make visits throughout the Card-Jitsu Party.
The timing changes does make this visit a little bit more complicated, and the team could change it in-line with clock changes, but I’d recommend checking the tracker for clear and up-to-date information on Sensei’s location. Good luck meeting him!