Skip to content

skylight

A Simple Sky Illuminance Model

v1.4 · Nov 17, 2025 · AGPL-3

Description

A tool to calculate sky illuminance values (in lux) for both sun and moon. The model is a translation of the Fortran code by Janiczek and DeYoung (1987) <https://archive.org/details/DTIC_ADA182110>.

Downloads

255

Last 30 days

17254th

674

Last 90 days

2.6K

Last year

Trend: +7.1% (30d vs prior 30d)

CRAN Check Status

14 OK
Show all 14 flavors
Flavor Status
r-devel-linux-x86_64-debian-clang OK
r-devel-linux-x86_64-debian-gcc OK
r-devel-linux-x86_64-fedora-clang OK
r-devel-linux-x86_64-fedora-gcc OK
r-devel-macos-arm64 OK
r-devel-windows-x86_64 OK
r-oldrel-macos-arm64 OK
r-oldrel-macos-x86_64 OK
r-oldrel-windows-x86_64 OK
r-patched-linux-x86_64 OK
r-release-linux-x86_64 OK
r-release-macos-arm64 OK
r-release-macos-x86_64 OK
r-release-windows-x86_64 OK

Check History

OK 14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

Reverse Dependencies (1)

imports

Dependency Network

Dependencies Reverse dependencies Rcpp skytrackr skylight

Version History

new 1.4 Mar 10, 2026
updated 1.4 ← 1.3 diff Nov 16, 2025
updated 1.3 ← 1.2 diff Sep 23, 2025
updated 1.2 ← 1.1 diff Nov 3, 2023
new 1.1 Oct 30, 2022