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% File src/library/base/man/timezones.Rd
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% File src/library/base/man/timezones.Rd
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% Part of the R package, http://www.R-project.org
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% Part of the R package, http://www.R-project.org
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% Copyright 1995-2011 R Core Team
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% Copyright 1995-2013 R Core Team
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% Distributed under GPL 2 or later
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% Distributed under GPL 2 or later
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\name{timezones}
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\name{timezones}
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\alias{Sys.timezone}
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\alias{Sys.timezone}
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\alias{timezone}
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\alias{timezone}
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Sys.timezone()
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Sys.timezone()
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}
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}
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\details{
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\details{
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  Time zones are a system-specific topic, but these days almost all \R
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  Time zones are a system-specific topic, but these days almost all \R
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  platforms use the same underlying code, used by Linux, Mac OS X,
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  platforms use the same underlying code, used by Linux, OS X,
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  Solaris, AIX, FreeBSD, Sun Java >= 1.4 and Tcl >= 8.5, and installed
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  Solaris, AIX, FreeBSD, Sun Java >= 1.4 and Tcl >= 8.5, and installed
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  with \R on Windows.
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  with \R on Windows.
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  It is not in general possible to retrieve the system's own name(s) for
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  It is not in general possible to retrieve the system's own name(s) for
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  the current timezone, but \code{Sys.timezone} will retrieve the name
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  the current timezone, but \code{Sys.timezone} will retrieve the name
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  earlier histories may not.
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  earlier histories may not.
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#ifdef unix
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#ifdef unix
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  For most Unix-alikes use the Olson database.  The system-specific
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  For most Unix-alikes use the Olson database.  The system-specific
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  default location in the file system varies, e.g.
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  default location in the file system varies, e.g.
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  \file{/usr/share/zoneinfo} (Linux, Mac OS X, FreeBSD),
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  \file{/usr/share/zoneinfo} (Linux, OS X, FreeBSD),
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  \file{/usr/share/lib/zoneinfo} (Solaris, AIX), \file{/usr/etc/zoneinfo},
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  \file{/usr/share/lib/zoneinfo} (Solaris, AIX), \file{/usr/etc/zoneinfo},
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  \ldots.  It is likely that there is a file \file{zone.tab} in that
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  \ldots.  It is likely that there is a file \file{zone.tab} in that
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  directory listing the locations known as time-zone names (but not for
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  directory listing the locations known as time-zone names (but not for
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  example \code{EST5EDT}).  See also
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  example \code{EST5EDT}).  See also
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  \url{http://en.wikipedia.org/wiki/Zone.tab}.
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  \url{http://en.wikipedia.org/wiki/Zone.tab}.