Utilities to help with migrations between timezone changes when they happen in the tzdb/zoneinfo/Olson database
Whenever a new Time Zone Database is released it could mean a huge pain for you and your users. This utilities allow you to get the ranges of affected dates when that happens; so your system may automatically migrate that data or ask your users what is the right thing to do.
Please read the full documentation for your language:
And this important thing:
If you are new to the issues of handling correctly time in software, please read the following:
Please note this is an effort from normal people, like you.
The current version of the database or software packages could have bugs. Or errors could be present in our JSON repository, which is generated from the tzinfo-data ruby gem; which have versions 2013c onwards and calculates timezone transitions up to 50 years from now (currently ≈ 2068).
THIS SOFTWARE IS CURRENTLY IN BETA, USE WITH CAUTION, DOUBLE CHECK EVERYTHING BEFORE APPLYING CHANGES TO YOUR SYSTEMS
Bug reports, corrections and suggestions are welcome in our github issues page.