rakudo/rakudo — pull request #130 by supernovus (2013-04-24 18:38:01+00:00)
Title: DateTime uses Int timezone offsets.

As it says on the box, DateTime now uses Int for timezone offsets, and no longer supports Callable objects for timezone offsets. $*TZ is now an integer value representing the offset from UTC in seconds.

This also resolves the long-standing bug with regards to properly setting the offset for negative timezones.