To cite package ‘moonlit’ in publications use:

  Smielak M (2026). _moonlit: Predicting Moonlight Intensity for a
  Given Time and Location_. R package version 0.1.1,
  <https://github.com/msmielak/moonlit>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {moonlit: Predicting Moonlight Intensity for a Given Time and Location},
    author = {Michal Smielak},
    year = {2026},
    note = {R package version 0.1.1},
    url = {https://github.com/msmielak/moonlit},
  }