... are still available in this directory. However since Apple is releasing official patches for OS X 10.3 as well as 10.4, I strongly recommend downloading them for two purposes only:
If you've used these packages to patch your machines, you can just apply the Apple patches over them. However do NOT use the uninstallers after applying the Apple patches, because they will restore your old, outdated timezone information over the Apple patches, effectively uninstalling them. (That's why they're called uninstallers...)
Panther Timezone Patch (3.9M DMG)
Panther Timezone Patch for Java (129K DMG)
Panther Timezone Patch (4.3K shell script)
Jaguar Timezone Patch (2.3K shell script)
Java Timezone Patch (only runs on Tiger, generates files usable on Panther) (4.2K shell script)