Thanks to KnightofAncient for pointing out the 5/12 performance!
The Falcom offline meeting will be run on live stream through Nico Live on 4/14 at 19:00 Japan Time. This is 6:00am EST. If you need more time information, please check this Time Zone Converter for assistance. If you can’t make it, remember that you can Time Shift the performance!
On the JDK Band website, talking about this particular performance, there is now a posting stating that details for a concert held on 5/12 will be announced on 4/13. I will keep people posted on here for the update! I will also add the two events to the calendar.
Be prepared, however, for this stream to possibly be region locked, as a heads up. I have no way to determine whether it will be now, or not.