The submission deadline for the js13kGames 2017 competition was September 13th, but it took almost half a year to finish that edition and be able to write a post mortem.
Meet.js, originally started by Damian Wielgosik, are local JavaScript meetups organized by the community and happening across the country. Meet.js Summit is a community-driven, more or less yearly gathering in the form of the full-blown conference.