I notice in Australia/Lord_Howe that the TZ environment variable in the compiled TZif file is: <+1030>-10:30<+11>-11,M10.1.0,M4.1.0 Are the signs backwards, i.e., should the signs between the angle brackets be the wrong ones and the offsets after the '>' be the right ones? The Zone record in the 2024a release is: Zone Australia/Lord_Howe 10:36:20 - LMT 1895 Feb 10:00 - AEST 1981 Mar 10:30 LH +1030/+1130 1985 Jul 10:30 LH +1030/+11 --Bill Seymour