https://issues.dlang.org/show_bug.cgi?id=15376
--- Comment #2 from github-bugzi...@puremagic.com --- Commits pushed to master at https://github.com/D-Programming-Language/phobos https://github.com/D-Programming-Language/phobos/commit/635cecee557bf5e82b2f614dd19e41383505c3f7 Fix for issue# 15376. Get time zone conversions at runtime. It's proven to be a maintenance problem to maintain the time zone conversions between the IANA TZ database names and the Windows time zone names in std.datetime. So, rather than compiling them in, this provides a way to get them at runtime (which will also make it so in the future, older releases can work properly on up-to-date Windows boxes, which is not the case currently with regards to time zone conversions). The current conversion functions can be deprecated after parseTZConversions has been out for a release (so that it's possible for users to compile their code for two releases in a row without getting deprecation messages). https://github.com/D-Programming-Language/phobos/commit/6be2087858765bdf8b3439ba9cfc4fc2d5e543a7 Merge pull request #3824 from jmdavis/issue15376 Fix for issue# 15376. Get time zone conversions at runtime. --