The open data day will be at the 7th of march this year with over 50 events worldwide organized by the Open Knowledge Foundation:
https://opendataday.org/
(a lot of confirmed events are not on the website yet, so I recommend to look what your local Open Knowledge Lab does)
The common voice project fits pretty well into this. My local Open Knowledge Lab Karlsruhe will also do an event, I am thinking about doing a presentation about CV there or at least a little lightning talk. I’ve already visited the Open Data Day a few times and it is always a nice group of data nerds plus interesting talks. So if anyone of you always looked for a chance to promote Common Voice, this could be a good chance. Most groups are very open to talks from new people so don’t be shy