suntools: Calculate Sun Position, Sunrise, Sunset, Solar Noon and Twilight

Provides a set of convenient functions for calculating sun-related information, including the sun's position (elevation and azimuth), and the times of sunrise, sunset, solar noon, and twilight for any given geographical location on Earth. These calculations are based on equations provided by the National Oceanic & Atmospheric Administration (NOAA) <> as described in "Astronomical Algorithms" by Jean Meeus (1991, ISBN: 978-0-943396-35-4). A resource for researchers and professionals working in fields such as climatology, biology, and renewable energy.

Version: 1.0.0
Depends: R (≥ 2.10)
Imports: methods, sf, stats
Suggests: testthat (≥ 3.0.0)
Published: 2023-07-06
Author: Roger Bivand ORCID iD [aut], Adriaan M. Dokter ORCID iD [ctb, cre], Pieter Huybrechts ORCID iD [ctb], Sebastian Luque [aut], Greg Pelletier [ctb], Alexander Tedeschi ORCID iD [ctb]
Maintainer: Adriaan M. Dokter <amd427 at>
License: GPL (≥ 3)
NeedsCompilation: no
Materials: README NEWS
CRAN checks: suntools results


Reference manual: suntools.pdf


Package source: suntools_1.0.0.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): suntools_1.0.0.tgz, r-oldrel (arm64): suntools_1.0.0.tgz, r-release (x86_64): suntools_1.0.0.tgz, r-oldrel (x86_64): suntools_1.0.0.tgz

Reverse dependencies:

Reverse depends: StreamMetabolism
Reverse imports: bioRad, birdscanR, EMbC, RchivalTag


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