CFtime: Using CF-Compliant Calendars with Climate Projection Data

Support for all calendars as specified in the Climate and Forecast (CF) Metadata Conventions for climate and forecasting data. The CF Metadata Conventions is widely used for distributing files with climate observations or projections, including the Coupled Model Intercomparison Project (CMIP) data used by climate change scientists and the Intergovernmental Panel on Climate Change (IPCC). This package specifically allows the user to work with any of the CF-compliant calendars (many of which are not compliant with POSIXt). The CF time coordinate is formally defined in the CF Metadata Conventions document available at <>.

Version: 1.4.0
Imports: methods, utils
Suggests: knitr, rmarkdown, ncdf4, RNetCDF, testthat (≥ 3.0.0), stringr
Published: 2024-06-05
DOI: 10.32614/CRAN.package.CFtime
Author: Patrick Van Laake [aut, cre, cph]
Maintainer: Patrick Van Laake <patrick at>
License: MIT + file LICENSE
NeedsCompilation: no
Materials: README NEWS
In views: Spatial, TimeSeries
CRAN checks: CFtime results


Reference manual: CFtime.pdf
Vignettes: Working with CFtime
Processing climate projection data


Package source: CFtime_1.4.0.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): CFtime_1.4.0.tgz, r-oldrel (arm64): CFtime_1.4.0.tgz, r-release (x86_64): CFtime_1.4.0.tgz, r-oldrel (x86_64): CFtime_1.4.0.tgz
Old sources: CFtime archive

Reverse dependencies:

Reverse imports: dacc, ncdfCF, ncmeta


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