- Upstream 2010m:
      - Hong Kong didn't observe DST in 1977
      - In zone.tab, remove obsolete association of Vostok Station with
        South Magnetic Pole; add association with Lake Vostok
    - Upstream 2010n:
      - Change end of DST in Samoa in 2011 from 2011-04-03 0:00 to
        2011-04-03 1:00