libcctz-doc 2.1~git~a59b930afc8+dfsg1-3 (amd64 binary) in ubuntu bionic

 CCTZ contains two libraries that cooperate with `<chrono>` to give C++
 programmers all the necessary tools for computing with dates, times, and time
 zones in a simple and correct manner.
 .
 This package contains tools and documentation and examples.