| Title: | Time Zone Database Information |
| Version: | 0.5.0 |
| Description: | Provides an up-to-date copy of the Internet Assigned Numbers Authority (IANA) Time Zone Database. It is updated periodically to reflect changes made by political bodies to time zone boundaries, UTC offsets, and daylight saving time rules. Additionally, this package provides a C++ interface for working with the 'date' library. 'date' provides comprehensive support for working with dates and date-times, which this package exposes to make it easier for other R packages to utilize. Headers are provided for calendar specific calculations, along with a limited interface for time zone manipulations. |
| License: | MIT + file LICENSE |
| URL: | https://tzdb.r-lib.org, https://github.com/r-lib/tzdb |
| BugReports: | https://github.com/r-lib/tzdb/issues |
| Depends: | R (≥ 4.0.0) |
| Suggests: | covr, testthat (≥ 3.0.0) |
| LinkingTo: | cpp11 (≥ 0.5.2) |
| Biarch: | yes |
| Config/Needs/website: | tidyverse/tidytemplate |
| Config/testthat/edition: | 3 |
| Encoding: | UTF-8 |
| RoxygenNote: | 7.3.2 |
| NeedsCompilation: | yes |
| Packaged: | 2025-03-14 18:41:13 UTC; davis |
| Author: | Davis Vaughan [aut, cre], Howard Hinnant [cph] (Author of the included date library), Posit Software, PBC [cph, fnd] |
| Maintainer: | Davis Vaughan <davis@posit.co> |
| Repository: | CRAN |
| Date/Publication: | 2025-03-15 22:50:02 UTC |
tzdb: Time Zone Database Information
Description
Provides an up-to-date copy of the Internet Assigned Numbers Authority (IANA) Time Zone Database. It is updated periodically to reflect changes made by political bodies to time zone boundaries, UTC offsets, and daylight saving time rules. Additionally, this package provides a C++ interface for working with the 'date' library. 'date' provides comprehensive support for working with dates and date-times, which this package exposes to make it easier for other R packages to utilize. Headers are provided for calendar specific calculations, along with a limited interface for time zone manipulations.
Author(s)
Maintainer: Davis Vaughan davis@posit.co
Other contributors:
Howard Hinnant (Author of the included date library) [copyright holder]
Posit Software, PBC [copyright holder, funder]
See Also
Useful links:
Report bugs at https://github.com/r-lib/tzdb/issues
Initialize tzdb for usage in other packages
Description
tzdb_initialize() is intended to be called from a client package's
.onLoad() as tzdb::tzdb_initialize() to ensure that the tzdb package
has been loaded.
The function itself doesn't do anything. It is instead called for the side-effect of loading the tzdb package. This does two things:
The tzdb
.onLoad()hook is run, which sets the path to the time zone database.The callables in tzdb are registered, which allows them to be called from other packages.
Usage
tzdb_initialize()
Details
There are alternative ways to ensure that tzdb is loaded. A client package
can alternatively import a function from tzdb into its package with the
@importFrom tag, or can call requireNamespace("tzdb", quiet = TRUE) from
its .onLoad().
Value
NULL, invisibly.
Examples
tzdb_initialize()
Time zone database names
Description
tzdb_names() returns the time zone names found in the database.
Usage
tzdb_names()
Value
A character vector of zone names.
Examples
tzdb_names()
Retrieve the path to the time zone database
Description
Retrieve the path to the time zone database
Usage
tzdb_path(type)
Arguments
type |
The type of time zone database to return the path for. Currently only |
Value
A single string containing the path to the database.
Examples
tzdb_path("text")
Time zone database version
Description
tzdb_version() returns the version of the time zone database currently in
use.
Usage
tzdb_version()
Value
A single string of the database version.
Examples
tzdb_version()