I was reading a blog post on Rust's 2018 roadmap (Rust is one of programming languages), and saw a sentence like below.
We will continue to publish releases every six weeks as usual. But we will designate a release in the latter third of the year (Rust 1.29 - 1.31) as Rust 2018.
I was confused with what "the latter third of the year" means here, but couldn't any decent explanations out there.
Is this some kind of idiom or something?
Thank you for your help in advance.