To cite package ‘tzdb’ in publications use:

  Vaughan D (2024). _tzdb: Time Zone Database Information_. R package
  version 0.4.0, , <https://github.com/r-lib/tzdb>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {tzdb: Time Zone Database Information},
    author = {Davis Vaughan},
    year = {2024},
    note = {R package version 0.4.0, },
    url = {https://github.com/r-lib/tzdb},
  }