Discover, Access, and Import Global Light Commons Data Packages R package glcdp version 1.0.0 Discovers Global Light Commons data packages through their registry, opens immutable passing revisions, and provides searchable inventories of package metadata. Selected metadata and measurement files can be downloaded or imported with metadata-defined columns, types, factor levels, date-time values, and time zones. 'Git Large File Storage' objects are resolved without requiring an external 'Git LFS' installation, and imported file groups can be explicitly collected into data suitable for personal light exposure analysis workflows. An included 'shiny' application supports interactive discovery, inspection, selection, preview, and reproducible handoff to 'R'. Software Depends: R (>= 4.1.0) Imports: cli, digest, dplyr, httr2, jsonlite, lubridate, readr, tibble Suggests: bslib (>= 0.6.0), knitr, rmarkdown, shiny (>= 1.7.2), testthat (>= 3.0.0) Johannes Zauner <johannes.zauner@tum.de> Comprehensive R Archive Network (CRAN) Johannes Zauner [aut, cre, cph] (ORCID: <https://orcid.org/0000-0003-2171-4566>), Salma M. Thalji [aut, cph] (ORCID: <https://orcid.org/0009-0002-7320-9289>), Manuel Spitschan [aut, cph] (ORCID: <https://orcid.org/0000-0002-8572-9268>) MIT + file LICENSE (https://CRAN.R-project.org/package=glcdp/LICENSE) 2026-08-06 application/tgz https://CRAN.R-project.org/package=glcdp doi:10.32614/CRAN.package.glcdp