NEWS

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suntools 1.1.0.9000

• Add missing atmospheric refraction correction to crespuscule() (#22).

suntools 1.1.0 (2025-11-07)

• Corrects the output date (given when POSIXct.out = TRUE) on days that shift between daylight savings time and standard time. On these days only the output date was one hour off (#19).

suntools 1.0.1 (2024-11-20)

Minor change to unit test to maintain compatibility with CRAN Debian system

• changed timezone EET to Europe/Helsinki in tests

suntools 1.0.0 (2023-07-06)

First release of suntools package on CRAN. Provides a set of functions to calculate sun position, sunrise, sunset, solar noon and twilight, which were formerly made available by the [maptools]((https://CRAN.R-project.org/package=maptools) package.

New features

• core functionality from former maptools/R/sun-methods.R has been retained in the original form.
• new method for spatial objects of class sf
• each method / function moved into a separate file for better readability.
• The package now includes unit tests to ensure reliability of functions.
• CI/CD has been introduced via GitHub Actions for a more efficient workflow. This includes automated checks that run across different operating systems (macOS, Windows, Ubuntu) and R versions.
• Added a NEWS.md file to track changes to the package.

Bug Fixes

• Resolved an issue where functions in the package would return a dataframe with a row name "newlon" when inputting a single-row matrix. This was unexpected and appeared in R versions < 4.3.0.
• Resolved an issue where functions in the package would return numeric values instead of dataframes.