To cite package ‘MoonShineR’ in publications use:

  Poon L (2026). _MoonShineR: Predict Moonlight, Sunlight, and/or
  Twilight Ground Illuminance_. R package version 1.1.0,
  <https://CRAN.R-project.org/package=MoonShineR>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {MoonShineR: Predict Moonlight, Sunlight, and/or Twilight Ground Illuminance},
    author = {Lok Poon},
    year = {2026},
    note = {R package version 1.1.0},
    url = {https://CRAN.R-project.org/package=MoonShineR},
  }