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DateTime-Lite-v0.3.0

Changes for version v0.3.0 - 2026-04-13

  • Added GPS coordinate-based timezone resolution to DateTime::Lite::TimeZone::new(). Passing C<latitude> and C<longitude> (decimal degrees) instead of C<name> finds the nearest canonical IANA timezone using the haversine great-circle distance against the reference coordinates stored in the C<zones> table of C<tz.sqlite3> (derived from IANA C<zone1970.tab>). No new dependencies. Note: this is an approximation based on one representative point per zone; it is accurate for most locations but may give incorrect results near timezone boundaries or in enclaves. For more boundary-precise resolution, see L<Geo::Location::TimeZoneFinder>.
  • Added private method _nearest_zone() to DateTime::Lite::TimeZone, implementing the haversine query entirely within SQLite via asin(), sqrt(), cos() and sin() functions. Only canonical zones with coordinates are considered.
  • Added input validation for latitude (-90..90) and longitude (-180..180), with proper error() returns rather than die().
  • Updated DateTime::Lite::TimeZone POD to document the coordinate-based resolution, its approximation caveat, and the valid parameter ranges.
  • Added t/14.tz_coordinates.t with 10 subtests covering: Tokyo, Paris, New York, Taipei, Sydney, Buenos Aires (southern hemisphere); integration with DateTime::Lite->now(); and input validation for missing, out-of-range, and non-numeric parameters.

Documentation

CONTRIBUTING.md
README.md
benchmark.pl
Compare DateTime and DateTime::Lite performance
build_tz_database.pl
Build the DateTime::Lite::TimeZone SQLite database
leap_seconds_header.pl
Generate leap_seconds.h for DateTime::Lite XS

Modules

DateTime::Lite
Lightweight, low-dependency drop-in replacement for DateTime
DateTime::Lite::Duration
Duration objects for use with DateTime::Lite
DateTime::Lite::Exception
Exception object for DateTime::Lite
DateTime::Lite::Infinite
Infinite past and future DateTime::Lite objects
DateTime::Lite::PP
Pure-Perl fallback for the DateTime::Lite XS layer
DateTime::Lite::TimeZone
Lightweight timezone support for DateTime::Lite

Provides

DateTime::Lite::Infinite::Future
in lib/DateTime/Lite/Infinite.pm
DateTime::Lite::Infinite::Past
in lib/DateTime/Lite/Infinite.pm
DateTime::Lite::_FakeLocale
in lib/DateTime/Lite/Infinite.pm
DateTime::Lite::_Thawed
in lib/DateTime/Lite.pm

Other files