set /a hsydney=h
set /a msydney=m+30
if %msydney% GTR 59 (
set /a msydney-=60
set /a hsydney+=1
)
if %msydney% LSS 10 set "msydney=0%msydney%"
if %hsydney% GTR 23 set /a hsydney-=24
set /a hbrisbane=h
set /a mbrisbane=m-30
if %mbrisbane% LSS 0 (
set /a mbrisbane+=60
set /a hbrisbane-=1
)
if %mbrisbane% LSS 10 set "mbrisbane=0%mbrisbane%"
if %hbrisbane% LSS 0 set /a hdarwin+=24
set /a hdarwin=h+1
set /a mdarwin=m
if %mdarwin% LSS 10 set "mdarwin=0%mdarwin%"
if %hdarwin% GTR 23 set /a hdarwin-=24
set /a hperth=h-2
set /a mperth=m-30
if %hperth% LSS 0 set /a hperth+=24
if %mperth% LSS 0 (
set /a mperth+=60
set /a hperth-=1
)
if %mperth% LSS 10 set "mperth=0%mperth%"