Version 0.1.1 of the timezone-olson package is now available on Hackage. http://hackage.haskell.org/package/timezone-olson The timezone-olson package provides a parser and renderer for binary Olson timezone files whose format is specified by the tzfile(5) man page on Unix-like systems. These files are often found in /usr/share/zoneinfo on Unix-like systems. Functions are provided for converting the parsed data into TimeZoneSeries objects from the timezone-series package. Now that "Version 2 format" Olson files are beginning to appear in the wild, we can see the full details of how the specification in the tzfile(5) man page is applied in real life. This release fixes several bugs related to parsing and rendering Version 2 format Olson files, as well as a few other small issues. Updating is recommended. A new version of the timezone-series package, also version 0.1.1, is also now available on Hackage. http://hackage.haskell.org/package/timezone-olson The timezone-series package endows Data.Time, from the time package, with several data types and functions for enhanced processing of timezones. Among them is TimeZoneSeries,which represents all of the clock settings that occur in a time zone, and functions to convert between UTCTime and LocalTime without knowing in advance what clock setting is in effect at the given moment. This release of timezone-series only adds a few type signatures and more documentation for isValidLocalTime and isRedundantLocalTime and friends. Aristid Breitkreuz provided a proof for the basic fact about time change gaps and overlaps that is used to implement them. The proof can be seen here: http://projects.haskell.org/time-ng/gaps_and_overlaps.html Many thanks to Aristid who, in addition to providing the above proof, assisted in finding bugs and preparing for the release of these two updates. Regards, Yitz