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tzdb

tzdb is a developer focused R package with two purposes:

• It ships an up-to-date copy of the IANA time zone database files.

• It provides low-level access to the C++ library, date.

To use the C++ API supplied by tzdb:

• Add tzdb to both Imports and LinkingTo.

• Call tzdb::tzdb_initialize() from your .onLoad().

• Access the date API through #include <tzdb/*.h> where * is replaced with the date header you want to use.

Note that while tzdb/tz.h declares many functions and types, most of their implementations are not present in the header file. This means that the functions in tzdb/tz.h are not safe to call from your R package. Instead, the most critical helpers have been exposed in a safe way in tzdb/tzdb.h. Use these instead.

Installation

You can install the released version of tzdb from CRAN with:

install.packages("tzdb")

And the development version from GitHub with:

# install.packages("pak")
pak::pak("r-lib/tzdb")

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.