Package: lutz Type: Package Title: Look Up Time Zones of Point Coordinates Version: 0.3.2.9000 Authors@R: c( person("Andy", "Teucher", email = "andy.teucher@gmail.com", role = c("aut", "cre"), comment = c(ORCID = "0000-0002-7840-692X")), person("Bob", "Rudis", email = "bob@rud.is", role = c("ctb"), comment = c(ORCID = "0000-0001-5670-2640")) ) Description: Input latitude and longitude values or an 'sf/sfc' POINT object and get back the time zone in which they exist. Two methods are implemented. One is very fast and uses 'Rcpp' in conjunction with data from the 'Javascript' library (). This method also works outside of countries' borders and in international waters, however speed comes at the cost of accuracy - near time zone borders away from populated centres there is a chance that it will return the incorrect time zone. The other method is slower but more accurate - it uses the 'sf' package to intersect points with a detailed map of time zones from here: . The package also contains several utility functions for helping to understand and visualize time zones, such as listing of world time zones, including information about daylight savings times and their offsets from UTC. You can also plot a time zone to visualize the UTC offset over a year and when daylight savings times are in effect. License: MIT + file LICENSE URL: https://andyteucher.ca/lutz/, https://github.com/ateucher/lutz BugReports: https://github.com/ateucher/lutz/issues Depends: R (>= 3.2) Imports: stats, Rcpp, lubridate Suggests: testthat (>= 2.1.0), sf (>= 0.7), sp, datasets, covr, ggplot2 Encoding: UTF-8 RoxygenNote: 7.2.3 Roxygen: list(markdown = TRUE) LinkingTo: Rcpp Repository: https://ateucher.r-universe.dev Date/Publication: 2023-10-17 20:45:39 UTC RemoteUrl: https://github.com/ateucher/lutz RemoteRef: HEAD RemoteSha: bddbd200863e54e4d04752b2aef03f4f5c6929fc NeedsCompilation: yes Packaged: 2026-07-02 07:29:03 UTC; root Author: Andy Teucher [aut, cre] (ORCID: ), Bob Rudis [ctb] (ORCID: ) Maintainer: Andy Teucher