To cite package ‘timeDate’ in publications use:

  Wuertz D, Setz T, Chalabi Y, Boshnakov GN (2023). _timeDate: Rmetrics
  - Chronological and Calendar Objects_. R package version 4032.109,
  <https://CRAN.R-project.org/package=timeDate>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {timeDate: Rmetrics - Chronological and Calendar Objects},
    author = {Diethelm Wuertz and Tobias Setz and Yohan Chalabi and Georgi N. Boshnakov},
    year = {2023},
    note = {R package version 4032.109},
    url = {https://CRAN.R-project.org/package=timeDate},
  }