# man > Date::Manip::Changes6 --- type: CommandReference command: Date::Manip::Changes6 mode: perldoc section: 3pm source: perldoc --- ## Quick Reference - `VERSION 6.86` — 2021-11-15: Change warn to carp, bug fixes, time zone fixes (tzdata 2021e) - `VERSION 6.85` — 2021-03-01: Test fixes - `VERSION 6.84` — 2021-03-01: Time zone fixes (tzdata 2021a), language fixes - `VERSION 6.83` — 2020-12-01: Time zone fixes (tzdata 2020d) - `VERSION 6.82` — 2020-06-01: Time zone fixes (tzdata 2020a) - `VERSION 6.81` — 2020-03-01: Packaging fix - `VERSION 6.80` — 2020-03-01: Missing Changes entry fixed - `VERSION 6.79` — 2019-12-01: Time zone fixes (tzdata 2019c) ## Name `Date::Manip::Changes6` — changes in `Date::Manip` 6.xx ## Synopsis This describes the changes made to the `Date::Manip` module in the 6.xx series. Major changes are marked with **(*)**; backward incompatible changes are marked with **(!)**. ### VERSION 6.86 (2021-11-15) - Changed warn to carp (carp instead of warn) for all warnings. - Fixed next/prev `Date::Manip::Recur` methods when no matching dates exist (GitHub #36). - Time zone fixes: Newest zoneinfo data (tzdata 2021e). ### VERSION 6.85 (2021-03-01) - Test fixes: corrected failing tests. ### VERSION 6.84 (2021-03-01) - Time zone fixes: Newest zoneinfo data (tzdata 2021a). - Language fixes: Italian corrections and additions (GitHub #33). ### VERSION 6.83 (2020-12-01) - Time zone fixes: Newest zoneinfo data (tzdata 2020d) (GitHub #32). ### VERSION 6.82 (2020-06-01) - Time zone fixes: Newest zoneinfo data (tzdata 2020a). ### VERSION 6.81 (2020-03-01) - Fixed packaging error in 6.80. ### VERSION 6.80 (2020-03-01) - Added missing Changes entry for previous version (GitHub #31). ### VERSION 6.79 (2019-12-01) - Time zone fixes: Newest zoneinfo data (tzdata 2019c). ### VERSION 6.78 (2019-08-29) - Time zone fixes: Newest zoneinfo data (tzdata 2019b). - Documentation fixes: fixed broken link (GitHub #29). ### VERSION 6.77 (2019-06-01) - Time zone fixes: Newest zoneinfo data (tzdata 2019a). ### VERSION 6.76 (2019-03-01) - Fixed bug in `Date::Manip::Date::list_holidays` (used 'now' instead of stored date). - Reordered TZ detection methods (lower priority for tzdata files to avoid issues in Docker) (GitHub #20). - Time zone fixes: Newest zoneinfo data (tzdata 2018i). ### VERSION 6.75 (2018-12-03) - Fixed packaging problems (version not set correctly in some files, invalid entries in Makefile.PL) (RT 127870). ### VERSION 6.74 (2018-12-01) - Removed .travis.yml file from tarball (GitHub #23). - Time zone fixes: Newest zoneinfo data (tzdata 2018e). ### VERSION 6.73 (2018-09-01) - Fixed math overflow on non-64-bit architectures in `Date::Manip::Base` (GitHub #22, RT 126052). - Fixed bug in normalizing estimated business deltas. ### VERSION 6.72 (2018-06-06) - Fixed recurrence bug (previous fix broke another form) (GitHub #20). - Fixed version number in two files. - Documentation fixes. ### VERSION 6.71 (2018-06-01) - Fixed infinite loop in recurrences that never produce a valid date; added `MaxRecurAttempts` config variable (RT 123708). - Added Changes file support. - Fixed timezone determination on MacOS High Sierra (symlinks) (GitHub #15). - Time zone fixes: Newest zoneinfo data (tzdata 2018e). - Documentation fixes. ### VERSION 6.70 (2018-03-01) - **(*)** **(!)** Improved delta handling: formalized semi-exact deltas, added new type (estimated), deprecated old `set`/`parse` options in `Date::Manip::Delta`. - **(!)** Deprecated parts of `Date::Manip::Delta` (old style will be removed in 7.00). - Deprecation of TZ variable postponed to 7.00. - Speed improvements (replaced logical calculations with numerical ones). - Changed behavior: if timezone cannot be determined, operations use GMT instead of failing (RT 123229). - Fixed Makefile.PL (module paths) (GitHub #13). - Time zone fixes: Newest zoneinfo data (tzdata 2018c). - Documentation fixes: rewrote `Date::Manip::Delta` page. ### VERSION 6.60 (2017-09-01) - Bug fixes: recurrence with no interval and start/end dates (GitHub #12). - Documentation fixes: clarified `Date::Manip::TZ::all_periods`. ### VERSION 6.59 (2017-06-01) - Time zone fixes: Newest zoneinfo data (tzdata 2017b). - Documentation fixes. ### VERSION 6.58 (2017-03-01) - Better support for `$mode` in `DateCalc` (DM6). - Bug fixes: `printf %e` gave '02' instead of ' 2' (RT 119787); tzdata method error (GitHub #8). - Time zone fixes: Newest zoneinfo data (tzdata 2017a). ### VERSION 6.57 (2016-12-01) - Time zone fixes: Newest zoneinfo data (tzdata 2016j). - Test fixes: faulty tests. ### VERSION 6.56 (2016-09-09) - Test fixes: corrected faulty test (RT 117404). ### VERSION 6.55 (2016-09-01) - Fixed bug: `$::TZ` not interpreted correctly (RT 114949). - Fixed recurrence parsing: incorrect values now trapped (GitHub #7). - Fixed bug in object creation methods. - Time zone fixes: Newest zoneinfo data (tzdata 2016f). - Test fixes: added tests based on `Devel::Cover`. ### VERSION 6.54 (2016-05-31) - Deprecation of `Date::Manip` 5.xx tests (no longer run by default). - Deprecation of TZ variable postponed to March 2017. - Bug fixes: `ExtUtils::MakeMaker` requirement changed (RT 112286); timezone abbreviation parsing fix. - Time zone fixes: Newest zoneinfo data (tzdata 2016d); default timezones changed. - Documentation fixes. ### VERSION 6.53 (2016-03-02) - Bug fixes: `Date::Manip::Delta::cmp` comparison bug; missing validity check in `secs_since_1970_GMT` (RT 111915). - Time zone fixes: Newest zoneinfo data (tzdata 2016a). - Documentation fixes: many typos fixed. ### VERSION 6.52 (2015-12-01) - Added date ranges on unmodified dates in Recur. - Added IWn and NWn recurrence modifiers. - **(!)** Reworked holidays: holiday names must be unique; complex holidays allowed. - Bug fixes: `RecurRange` config variable not used; deltas not parsed correctly as dates (RT 109600). - Time zone fixes: Newest zoneinfo data (tzdata 2015g). - Test fixes: added tests. ### VERSION 6.51 (2015-09-01) - Minor changes from perlcritic. - **(!)** `Date::Manip::Delta::value` now returns empty string instead of undef. - Bug fixes: large delta calculations now fail with error (RT 105737); fixed introduced bug; fixed warning in 5.22.0. - Improved DM6 `ParseDate` and `ParseDateString` (added `@opts` argument) (RT 105622). - Time zone fixes: Newest zoneinfo data (tzdata 2015f); now uses `/etc/localtime` to determine local timezone (RT 105159); clearer invalid date messages. - Test fixes: coverage increased. - Documentation fixes. ### VERSION 6.50 (2015-06-01) - Bug fixes: removed bundled NYTprof data (RT 103252); fixed discarded date completeness info; `SetDate` with zone alias; added `Format_MMMYYYY` config variable (RT 103142); fixed Makefile.PL for Windows (RT 104141). - Time zone fixes: Newest zoneinfo data (tzdata 2015d); added HP-UX aliases. - Documentation fixes. ### VERSION 6.49 (2015-03-01) - Added deprecation warning for TZ config variable. - Speedups for timezone handling (RT 102284). - Bug fixes: added missing `is_date` base method to `Date::Manip::Base`. - Time zone fixes: Newest zoneinfo data (tzdata 2015a). - Language fixes: corrections by Nicholas Riley. ### VERSION 6.48 (2014-12-01) - Put repository on GitHub. - `parse_time` now parses ISO 8601 times. - Parsing special dates with timezones now works (e.g., "Christmas at noon PST"). - `dm_zdump` modified to include gmtoff. - Bug fixes: `printf` with embedded newlines (infinite loop); `24:00` parsing; fractional values with comma. - Time zone fixes: Newest zoneinfo data (tzdata 2014j). ### VERSION 6.47 (2014-09-01) - Time zone fixes: Newest zoneinfo data (tzdata 2014f). - Language fixes: fixed encoding errors in POD. ### VERSION 6.46 (2014-07-08) - Broken distribution: removed temporary edit file (RT 96459). - Time zone fixes: Newest zoneinfo data (tzdata 2014e). - Language fixes: added missing plural abbreviations (RT 96944). ### VERSION 6.45 (2014-06-05) - Test fix: one failing test. ### VERSION 6.44 (2014-06-01) - **(*)** Improvements to UTF8 handling: case-insensitive matching, regexp fixes, Russian and Romanian corrections, added cp1251 encoding (RT 93545). - New features: `parse_format` can return `%+` if desired. - Time zone fixes: Newest zoneinfo data (tzdata 2014c). - Documentation fixes. ### VERSION 6.43 (2014-03-03) - Several distribution file changes (Build.PL, Makefile.PL, META.yml) for quality. - Time zone fixes: Newest zoneinfo data (tzdata 2013i). - Documentation fixes: cleaned up Recur documentation. ### VERSION 6.42 (2013-12-02) - Added `ParseDateFormat` function to DM6 functional interface (RT 89286). - Added Common Log format (apache logs). - Time zone fixes: Newest zoneinfo data (tzdata 2013h). - Bug fixes: delta with timezone failed (RT 89256); events warning if no events (RT 90344). ### VERSION 6.41 (2013-09-05) - Bug fixes: removed .swp file (RT 85845); `parse_format` times between 00:00:00 and 01:00:00; Makefile.PL requirements (RT 86137); `parse_format` with `%s` (RT 87498); `find_encoding` import (RT 87665); recurrences with no interval and no dates in range. - Time zone fixes: Newest zoneinfo data (tzdata 2013d). ### VERSION 6.40 (2013-06-01) - Removed POD generation for `Date::Manip::TZ::*` and `Date::Manip::Offset::*` modules. - Time zone fixes: Newest zoneinfo data (tzdata 2013c). ### VERSION 6.39 (2013-03-01) - Added `$mode` argument to `ParseDateDelta` (RT 82991). - Added `get_config` method to all classes. - Language fixes: German fix. - Documentation fixes: workaround for dmake in strawberry perl. ### VERSION 6.38 (2013-01-08) - **(*)** Tar file format corrected to 'gnu' (RT 80594). - **(*)** `Date::Manip` 5.xx end-of-life (no further support). - **(!)** Removed deprecated config variables: `IntCharSet`, `RecurNumFudgeDays`. ### VERSION 6.37 (2012-12-01) - Bug fixes: ISO 8601 YYYY-WXX-D in December. - Time zone fixes: Newest zoneinfo data (tzdata 2012j). - Documentation fixes: spelling. ### VERSION 6.36 (2012-10-31) - Fix version numbers (6.35 had incorrect numbers). ### VERSION 6.35 (2012-10-31) - Fix PATH issue (overrode PATH). - Removed dependency on YAML (reverted to perl literals). - Bug fixes: PATH fix (RT 80435). ### VERSION 6.34 (2012-09-04) - Bug fix: PATH only in Unix section. ### VERSION 6.33 (2012-09-01) - Improvements to `Date::Manip::Delta`: added `convert` method, cleaned up field lengths, added `cmp` method. - Bug fixes: closed DATA filehandle (Doru Theodor Petrescu); better DM5/DM6 loading (RT 78152); secure PATH in TZ.pm (RT 78566). - Time zone fixes: support for spaces in timezone filenames (RHEL); newest zoneinfo data (tzdata 2012e). - Documentation fixes. ### VERSION 6.32 (2012-06-01) - Modified Build.PL for better HTML building support (RT 75118). - Bug fixes: business day calculations (RT 76336); Delta/Recur object creation; SetDate/ForceDate in config file. - Time zone fixes: Newest zoneinfo data (tzdata 2012c). - Documentation fixes: UTF-8 in POD. ### VERSION 6.31 (2012-03-01) - Added extended formats to printf: `%`, `%`, `%`, `%`, `%`, `%`, `%`. - Can now parse formats where time and zone are not adjacent. - Added `PeriodTimeSep` config variable. - Holidays can be used as date strings (e.g., `parse('Christmas')`). - Added new recur modifiers: WDn, IBD, NBD. - Added new date format: '2nd day in May'. - More flexible timezone parsing with both offset and abbrev (parentheses optional). - Deltas now support fractional values (e.g., 1.5 days). - Multiple holidays supported. - Bug fixes: abbreviation case-insensitivity; Holidays split across config files. - Language fixes: Norwegian, Danish, Finnish; printf directive cleanup. - Documentation fixes. ### VERSION 6.30 (2012-01-11) - **(*)** **(!)** Reworked deltas: removed constraint that day=24 hours, added semi-exact deltas, cosmetic sign changes, non-normalized deltas, removed `subtract=2` limitation. - **(!)** Modified `Delta_Format`: added 'semi' mode. - **(!)** Removed deprecated config variables: `GlobalCnf`, `IgnoreGlobalCnf`, `PersonalCnf`, `PersonalCnfPath`, `PathSep`, `Internal`, `DeltaSigns`, `UpdateCurrTZ`, `ConvTZ`, `OldConfigFiles`, `ResetWorkDay`. - Time zone fixes: Newest zoneinfo data (tzdata 2011n); fixed +0000/-0000 parsing; store 30 years of future dates; timezone abbreviations take higher precedence. - Better handling of `undef` in DM6. - Bug fixes: `parse_format` `%f` and `%i`; `Date::Manip::Delta::set` month; DST change parsing; minor `Delta_Format` fix. ### VERSION 6.25 (2011-08-31) - Relaxed ISO 8601 constraint: single digit hour allowed with whitespace. - **(*)** Set official removal dates for old config variables (2 years after deprecation, TZ kept for 4 years). - Time zone fixes: Newest zoneinfo data (tzdata 2011i). ### VERSION 6.24 (2011-06-13) - New features: spaces ignored in SetDate/ForceDate config values. - Bug fixes: 'in one week' parsing; options passed as listref; timezone data. - Time zone fixes: Newest zoneinfo data (tzdata 2011g). ### VERSION 6.23 (2011-04-15) - **(!)** Renamed `Date::Manip::Recur::base` to `basedate`. - **(*)** Reworked holidays defined as recurrences (improved bootstrap). - New features: `printf` can take multiple format strings. - Bug fixes: `GlobalCnf` not working; improved error messages; invalid date/timezone check; object creation bugs; Recur->dates; mode preservation; recurrence with base date outside range; `%s` in GMT. - Time zone fixes: Newest zoneinfo data (tzdata 2011f). - Documentation fixes. ### VERSION 6.22 (2011-03-07) - Time zone fixes: Newest zoneinfo data (tzdata 2011b); fixed gmtoff method; env method now allows offset; removed VMS SYS$TIMEZONE_RULE method; improved alias/abbreviation order. - Language fixes: module dies if language module cannot be loaded. - Documentation fixes: added sample config file. ### VERSION 6.21 (2011-01-10) - New features: deltas support spelled out numbers (e.g., 'two weeks'). - Bug fixes: `week_of_year`; minor potential bug. - Time zone fixes: updated Windows aliases. - Language fixes: added Norwegian. ### VERSION 6.20 (2010-12-01) - **(*)** **(!)** Reworked recurrences: now calculated relative to base date, not previous event; base date from start date if not specified; added iterator functions; `RecurNumFudgeDays` deprecated. - Time zone fixes: Newest zoneinfo data (tzdata 2010o). ### VERSION 6.14 (2010-10-20) - **(*)** `Date::Manip` 5.xx fully integrated with 6.xx (both installed, correct one chosen). - Bug fixes: recurrence handling broken (RT 62128). - Documentation fixes: cleaned up. ### VERSION 6.13 (2010-10-13) - New features: input methods to `Date::Manip::Date` and `Date::Manip::Delta`; `date +%z` used for timezone. - Bug fixes: memory leak workaround (RT 54937); incomplete date with 'last'; 'Sunday, 9th Jan 1972' parsing. - Time zone fixes: Zones.pm generation order. - Language fixes: French month abbreviations with periods. - Test fixes: added tests from RT 29655. - Documentation fixes: corrected `new_*` methods documentation. ### VERSION 6.12 (2010-09-27) - **(!)** `IntCharSet` config variable deprecated. - New features: `Encoding` config variable; EXIF date format parsing. - Bug fixes: Build.PL perl version requirement; `Date::Manip::Date::set` broken; `Date::Manip::Delta::set` broken (RT 59096). - Time zone fixes: Newest zoneinfo data (tzdata 2010m). - Language fixes: **(*)** Converted all language files to UTF-8, added encoding support; Polish, Dutch fixes; extended 'nth' to 53rd; German corrections. - Documentation fixes: clarified `Date::Manip::Recur`. ### VERSION 6.11 (2010-04-30) - Bug fixes: fixed incorrect module requirement in Build.PL. ### VERSION 6.10 (2010-04-29) - **(*)** Combined 5.xx and 6.xx releases into one distribution. - **(!)** Zones specified by offset: default now checks daylight saving time zones first. - Bug fixes: `Date_ConvTZ` with offset; business mode with minutes; business mode failures (RT 56638). - Time zone fixes: Newest zoneinfo data (tzdata 2010i); `dst` sometimes default for `$dstflag`; OpenUNIX colon removal. - Test fixes: converted to `Test::Inter`. - Documentation fixes: corrected `$dstflag` default. ### VERSION 6.07 (2010-02-05) - Bug fixes: `Date_TimeZone` not returning timezone. ### VERSION 6.06 (2010-02-05) - Bug fixes: `%Z` printf format; '5pm' support; minor warning; speedups. - Time zone fixes: Newest zoneinfo data (tzdata 2010b); added dm_zdump script; improved periods; fixed `Date_ConvTZ` empty values; fixed odd timezone cases. ### VERSION 6.05 (2009-12-09) - **(!)** `%z` format reverted to `-0500` (RFC 822), new `%N` format for `-05:00:00`. - **(*)** Significant speedups (suggestions from perlmonks). - Bug fixes: `parse_date` default time; `DateCalc` with `$mode`; `Makefile.PL` for `Win32::TieRegistry`; added dm_date script. - Time zone fixes: fixed non-English Windows; tzdata 2009b. - Test fixes: reduced precision for long double. ### VERSION 6.04 (2009-11-25) - Bug fixes: events not interpreted in correct timezone with SetDate/ForceDate. ### VERSION 6.03 (2009-11-24) - Bug fixes: corrected backward incompatibility with `UnixDate`. ### VERSION 6.02 (2009-11-24) - Bug fixes: disabled `curr_zone_methods` under taint checking. - Test fixes: ensured tests run correctly in other timezones. ### VERSION 6.01 (2009-11-23) - **(*)** Fixed bug where SetDate/ForceDate caused wrong timezone. ### VERSION 6.00 (2009-11-23) - First release of 6.xx series. - **(*)** Massive reorganization and near total rewrite. - **(*)** Broke into several smaller modules. - **(*)** Full timezone support (tzdata 2009s). - New features: `ForceDate` config variable, languages converted to YAML, better delta formats, `SetDate` config variable, `parse_format`. - Several config variables deprecated. - Bug fixes: YYtoYYYY, VMS `date` command, New Year's Day recurrence. - Language fixes: Turkish, Dutch. ## See Also - [Date::Manip](http://localhost/phpMan.php/perldoc/Date%3A%3AManip/markdown) — main module documentation ## Bugs and Questions Please refer to the [Date::Manip::Problems](http://localhost/phpMan.php/perldoc/Date%3A%3AManip%3A%3AProblems/markdown) documentation for information on submitting bug reports or questions to the author. ## License This script is free software; you can redistribute it and/or modify it under the same terms as Perl itself. ## Author Sullivan Beck ()