chron

2.3-63

Chronological Objects which Can Handle Dates and Times

37packages depend

543.1Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Kurt HornikFirst published 1999-04-1099 releasesCRAN page ↗

Provides chronological objects which can handle dates and times.

Install

R (CRAN)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("chron", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-chron

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-chron

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-chron

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 1.3 min · r-oldrel-macos-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-07-17
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-07-16
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 76%
Return-value docs: 80%
References docs: 0%

Downloads

543.1K

CRAN downloads in the past year

Rank #532 · ~1.5K/day · ~45.3K/mo

Releases R versions

Daily download trend is not available in this view yet.

42.2K30 days

146.2K90 days

543.1K1 year

Compare downloads with other packages →

Also on3.7K r2u134 autocran15.4K conda_forge675 c2d4u

Dependencies

Declared dependencies

2 external dependencies (excludes base and recommended)

Depends (1)

R >= 2.12.0

Imports (2)

graphicsstats

LinkingTo (0)

none

Suggests (2)

scales ggplot2

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

37direct

58indirect

Code & Tests

Code Composition

R 2,127 (69%)Rd 815 (26%)C 156 (5%)

Code characteristics

Object systems

S364

Cyclomatic complexity: 2.0 median / 35 max

Test coverage

Line coverage

–

Expression

–

Tests / Examples

–

Functions

105 25 exported

Complexity

4.7 avg / 35 max

Call network

105 nodes / 107 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

Per-function coverage is not measured for this package yet.

People & History

People (4)

Maintainer (1)

Kurt Hornik

Author, Translator, Maintainer · added in 2.3-43

Authors (2)

Kurt Hornik

Author, Translator, Maintainer · added in 2.3-43

David James

Author · added in 2.3-43

Contributors (2)

R Core Team

Contributor · added in 2.3-52

Gabor Grothendieck

Contributor · added in 2.3-43

Translators (1)

Kurt Hornik

Author, Translator, Maintainer · added in 2.3-43

Listed in earlier versions (2)

R port by Kurt Hornik.

no longer listed · 2.1-6 to 2.3-42

S original by David James

no longer listed · 2.1-6 to 2.3-42

Package Timeline

99 releases. Pick two to compare their code metrics. R releases are shown for context.

2.3-63Latest
2026-07-15 · current release · diff ↗
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R 4.6.0 released · 2026-04-24
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R 4.5.0 released · 2025-04-11
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R 4.4.0 released · 2024-04-24
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R 4.3.0 released · 2023-04-21
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R 4.2.0 released · 2022-04-22
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R 4.1.0 released · 2021-05-18
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R 4.0.0 released · 2020-04-24
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R 3.6.0 released · 2019-04-26
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2.1-6
1999-04-10

Package metadata

First published: 1999-04-10
Total releases: 99 / 27 yrs
License: GPL-2 OSI
Minimum R: ≥ 2.12.0
Download size: 37 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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