To cite package ‘clock’ in publications use:

  Vaughan D (2024). _clock: Date-Time Types and Tools_. R package
  version 0.7.1, <https://CRAN.R-project.org/package=clock>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {clock: Date-Time Types and Tools},
    author = {Davis Vaughan},
    year = {2024},
    note = {R package version 0.7.1},
    url = {https://CRAN.R-project.org/package=clock},
  }