To cite package ‘almanac’ in publications use:

Vaughan D (2026). almanac: Tools for Working with Recurrence Rules. R package version 1.0.1, https://CRAN.R-project.org/package=almanac.

Corresponding BibTeX entry:

  @Manual{,
    title = {almanac: Tools for Working with Recurrence Rules},
    author = {Davis Vaughan},
    year = {2026},
    note = {R package version 1.0.1},
    url = {https://CRAN.R-project.org/package=almanac},
  }