@article{JSSv040i03, title={Dates and Times Made Easy with lubridate}, volume={40}, url={https://www.jstatsoft.org/index.php/jss/article/view/v040i03}, doi={10.18637/jss.v040.i03}, abstract={This paper presents the lubridate package for R, which facilitates working with dates and times. Date-times create various technical problems for the data analyst. The paper highlights these problems and offers practical advice on how to solve them using <b>lubridate</b>. The paper also introduces a conceptual framework for arithmetic with date-times in R.}, number={3}, journal={Journal of Statistical Software}, author={Grolemund, Garrett and Wickham, Hadley}, year={2011}, pages={1–25} }