I've updated the Ruby Conferences 'n' Camps in 2019 - What's Upcoming? 
Calendar page @ Planet Ruby.
What's News? Added Deccan RubyConf (in August in Pune, Maharashtra, India),
RubyConf Colombia (in September in Medellín, Colombia), and more.
Happy meeting up with rubyists in 2019. Cheers. Prost.
PS: Do you have a favorite conference? Let's give a shout-out to
EuRuKo 2019 (in June in Rotterdam, the Netherlands).