/usr/share/zoneinfo/posix/Australia/ is in tzdata 2018e-0+deb8u1.
This file is owned by root:root, with mode 0o755.
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/usr/share/zoneinfo/posix/Australia/ACT
/usr/share/zoneinfo/posix/Australia/Adelaide
/usr/share/zoneinfo/posix/Australia/Brisbane
/usr/share/zoneinfo/posix/Australia/Broken_Hill
/usr/share/zoneinfo/posix/Australia/Canberra
/usr/share/zoneinfo/posix/Australia/Currie
/usr/share/zoneinfo/posix/Australia/Darwin
/usr/share/zoneinfo/posix/Australia/Eucla
/usr/share/zoneinfo/posix/Australia/Hobart
/usr/share/zoneinfo/posix/Australia/LHI
/usr/share/zoneinfo/posix/Australia/Lindeman
/usr/share/zoneinfo/posix/Australia/Lord_Howe
/usr/share/zoneinfo/posix/Australia/Melbourne
/usr/share/zoneinfo/posix/Australia/NSW
/usr/share/zoneinfo/posix/Australia/North
/usr/share/zoneinfo/posix/Australia/Perth
/usr/share/zoneinfo/posix/Australia/Queensland
/usr/share/zoneinfo/posix/Australia/South
/usr/share/zoneinfo/posix/Australia/Sydney
/usr/share/zoneinfo/posix/Australia/Tasmania
/usr/share/zoneinfo/posix/Australia/Victoria
/usr/share/zoneinfo/posix/Australia/West
/usr/share/zoneinfo/posix/Australia/Yancowinna