The 2019 North American Qualifier (NAQ) will be held tomorrow. The NAQ is an online, pre-regional programming contest to help coaches choose teams for regional competitions (or serve as practice). The contest begins at 2019-10-05 18:00 UTC. Official participants who have already registered can access the problems at https://naq19.kattis.com/.
There is also a slightly delayed open mirror where anyone can compete. The open mirror begins fifteen minutes after the official contest, and is available here: https://open.kattis.com/contests/naq19open.
More details here: http://cs.baylor.edu/~hamerly/icpc/qualifier_2019/. Past versions: 2018, 2017.
Good luck to all competing!
EDIT: Contest is over, congratulations to all the teams that competed! Some statistics and solution outlines available here: https://cs.baylor.edu/~hamerly/icpc/qualifier_2019/