To cite package ‘solartime’ in publications use:

Wutzler T (2024). solartime: Utilities Dealing with Solar Time Such as Sun Position and Time of Sunrise. R package version 0.0.4, https://github.com/bgctw/solartime.

Corresponding BibTeX entry:

  @Manual{,
    title = {solartime: Utilities Dealing with Solar Time Such as Sun
      Position and Time of Sunrise},
    author = {Thomas Wutzler},
    year = {2024},
    note = {R package version 0.0.4},
    url = {https://github.com/bgctw/solartime},
  }