May 5, Friday: CSSConf EU (Tickets sold separately).
May 5, Friday: CSSConf EU closing / JSConf EU Opening Party, Arena Club, from 20:00.
May 6, Saturday: JSConf EU Day 1, Arena Berlin, Breakfast from 8:30, Grand opening at 09:30, Dinner at around 19:30, Evening program from 21:00.
May 7, Sunday: JSConf EU Day 2, Arena Berlin, Breakfast from 9:00, Closing remarks and family photo from 19:00, After party (location TBD) from 19:30.
May 8, Monday: Relax.js Brunch (location TBD) from 10:00.
For more events in the days surrounding JSConf, check out WhatTheFest Berlin.