r-cran-lubridate 1.7.4-3build1 (amd64 binary) in ubuntu groovy

 Functions to work with date-times and timespans: fast and user
 friendly parsing of date-time data, extraction and updating of components of
 a date-time (years, months, days, hours, minutes, and seconds), algebraic
 manipulation on date-time and timespan objects. The 'lubridate' package has
 a consistent and memorable syntax that makes working with dates easy and
 fun.