To cite package ‘calcal’ in publications use:

Hyndman R (2026). calcal: Calendrical Calculations. R package version 1.0.4, https://CRAN.R-project.org/package=calcal.

Corresponding BibTeX entry:

  @Manual{,
    title = {calcal: Calendrical Calculations},
    author = {Rob Hyndman},
    year = {2026},
    note = {R package version 1.0.4},
    url = {https://CRAN.R-project.org/package=calcal},
  }