To cite package ‘almanac’ in publications use:

Vaughan D (2025). almanac: Tools for Working with Recurrence Rules. R package version 1.0.0.9000, https://github.com/davisvaughan/almanac.

Corresponding BibTeX entry:

  @Manual{,
    title = {almanac: Tools for Working with Recurrence Rules},
    author = {Davis Vaughan},
    year = {2025},
    note = {R package version 1.0.0.9000},
    url = {https://github.com/davisvaughan/almanac},
  }