diff --git a/.gitignore b/.gitignore
index 7b4b161..87649e4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
 SOURCES/javazic-1.8-37392f2f5d59.tar.xz
 SOURCES/javazic.tar.gz
-SOURCES/tzcode2017b.tar.gz
-SOURCES/tzdata2017b.tar.gz
+SOURCES/tzcode2017c.tar.gz
+SOURCES/tzdata2017c.tar.gz
diff --git a/.tzdata.metadata b/.tzdata.metadata
index a974fd9..33b4220 100644
--- a/.tzdata.metadata
+++ b/.tzdata.metadata
@@ -1,4 +1,4 @@
 77292e1839952807567570118e01405b405af80c SOURCES/javazic-1.8-37392f2f5d59.tar.xz
 ee8ad215161cd132e65e2be447b279457158b540 SOURCES/javazic.tar.gz
-b873572cd29bcc7e1f56b32a6e414c2d5d96dac9 SOURCES/tzcode2017b.tar.gz
-0f13bbb641f5742796609d3484006fe01fa654f1 SOURCES/tzdata2017b.tar.gz
+c7210df05dbb23b4e3aed699f258acfe45146947 SOURCES/tzcode2017c.tar.gz
+d7b686e550b824f6f832332efa65594e2f570954 SOURCES/tzdata2017c.tar.gz
diff --git a/SOURCES/0001-Fix-Makefile-quoting-bug.patch b/SOURCES/0001-Fix-Makefile-quoting-bug.patch
new file mode 100644
index 0000000..41e04fd
--- /dev/null
+++ b/SOURCES/0001-Fix-Makefile-quoting-bug.patch
@@ -0,0 +1,170 @@
+From b520d20b8122a783f99f088758b78d928f70ee34 Mon Sep 17 00:00:00 2001
+From: Paul Eggert <eggert@cs.ucla.edu>
+Date: Mon, 23 Oct 2017 11:42:45 -0700
+Subject: [PROPOSED] Fix Makefile quoting bug
+
+Problem with INSTALLARGS reported by Zefram in:
+https://mm.icann.org/pipermail/tz/2017-October/025360.html
+Fix similar problems too.
+* Makefile (ZIC_INSTALL, VALIDATE_ENV, CC, install)
+(INSTALL, version, INSTALLARGS, right_posix, posix_right)
+(check_public): Use apostrophes to prevent undesirable
+interpretation of names by the shell.  We still do not support
+directory names containing apostrophes or newlines, but this is
+good enough.
+* NEWS: Mention this.
+---
+ Makefile | 64 ++++++++++++++++++++++++++++++++--------------------------------
+ NEWS     |  8 ++++++++
+ 2 files changed, 40 insertions(+), 32 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index c92edc0..97649ca 100644
+--- a/Makefile
++++ b/Makefile
+@@ -313,7 +313,7 @@ ZFLAGS=
+ 
+ # How to use zic to install tz binary files.
+ 
+-ZIC_INSTALL=	$(ZIC) -d $(DESTDIR)$(TZDIR) $(LEAPSECONDS)
++ZIC_INSTALL=	$(ZIC) -d '$(DESTDIR)$(TZDIR)' $(LEAPSECONDS)
+ 
+ # The name of a Posix-compliant 'awk' on your system.
+ AWK=		awk
+@@ -341,8 +341,8 @@ SGML_CATALOG_FILES= \
+ VALIDATE = nsgmls
+ VALIDATE_FLAGS = -s -B -wall -wno-unused-param
+ VALIDATE_ENV = \
+-  SGML_CATALOG_FILES=$(SGML_CATALOG_FILES) \
+-  SGML_SEARCH_PATH=$(SGML_SEARCH_PATH) \
++  SGML_CATALOG_FILES='$(SGML_CATALOG_FILES)' \
++  SGML_SEARCH_PATH='$(SGML_SEARCH_PATH)' \
+   SP_CHARSET_FIXED=YES \
+   SP_ENCODING=UTF-8
+ 
+@@ -396,7 +396,7 @@ GZIPFLAGS=	-9n
+ #MAKE=		make
+ 
+ cc=		cc
+-CC=		$(cc) -DTZDIR=\"$(TZDIR)\"
++CC=		$(cc) -DTZDIR='"$(TZDIR)"'
+ 
+ AR=		ar
+ 
+@@ -473,29 +473,29 @@ all:		tzselect yearistype zic zdump libtz.a $(TABDATA)
+ ALL:		all date $(ENCHILADA)
+ 
+ install:	all $(DATA) $(REDO) $(MANS)
+-		mkdir -p $(DESTDIR)$(ETCDIR) $(DESTDIR)$(TZDIR) \
+-			$(DESTDIR)$(LIBDIR) \
+-			$(DESTDIR)$(MANDIR)/man3 $(DESTDIR)$(MANDIR)/man5 \
+-			$(DESTDIR)$(MANDIR)/man8
++		mkdir -p '$(DESTDIR)$(ETCDIR)' '$(DESTDIR)$(TZDIR)' \
++			'$(DESTDIR)$(LIBDIR)' \
++			'$(DESTDIR)$(MANDIR)/man3' '$(DESTDIR)$(MANDIR)/man5' \
++			'$(DESTDIR)$(MANDIR)/man8'
+ 		$(ZIC_INSTALL) -l $(LOCALTIME) -p $(POSIXRULES)
+-		cp -f $(TABDATA) $(DESTDIR)$(TZDIR)/.
+-		cp tzselect zic zdump $(DESTDIR)$(ETCDIR)/.
+-		cp libtz.a $(DESTDIR)$(LIBDIR)/.
+-		$(RANLIB) $(DESTDIR)$(LIBDIR)/libtz.a
+-		cp -f newctime.3 newtzset.3 $(DESTDIR)$(MANDIR)/man3/.
+-		cp -f tzfile.5 $(DESTDIR)$(MANDIR)/man5/.
+-		cp -f tzselect.8 zdump.8 zic.8 $(DESTDIR)$(MANDIR)/man8/.
++		cp -f $(TABDATA) '$(DESTDIR)$(TZDIR)/.'
++		cp tzselect zic zdump '$(DESTDIR)$(ETCDIR)/.'
++		cp libtz.a '$(DESTDIR)$(LIBDIR)/.'
++		$(RANLIB) '$(DESTDIR)$(LIBDIR)/libtz.a'
++		cp -f newctime.3 newtzset.3 '$(DESTDIR)$(MANDIR)/man3/.'
++		cp -f tzfile.5 '$(DESTDIR)$(MANDIR)/man5/.'
++		cp -f tzselect.8 zdump.8 zic.8 '$(DESTDIR)$(MANDIR)/man8/.'
+ 
+ INSTALL:	ALL install date.1
+-		mkdir -p $(DESTDIR)$(BINDIR) $(DESTDIR)$(MANDIR)/man1
+-		cp date $(DESTDIR)$(BINDIR)/.
+-		cp -f date.1 $(DESTDIR)$(MANDIR)/man1/.
++		mkdir -p '$(DESTDIR)$(BINDIR)' '$(DESTDIR)$(MANDIR)/man1'
++		cp date '$(DESTDIR)$(BINDIR)/.'
++		cp -f date.1 '$(DESTDIR)$(MANDIR)/man1/.'
+ 
+ version:	$(VERSION_DEPS)
+ 		{ (type git) >/dev/null 2>&1 && \
+ 		  V=`git describe --match '[0-9][0-9][0-9][0-9][a-z]*' \
+ 				--abbrev=7 --dirty` || \
+-		  V=$(VERSION); } && \
++		  V='$(VERSION)'; } && \
+ 		printf '%s\n' "$$V" >$@.out
+ 		mv $@.out $@
+ 
+@@ -529,12 +529,12 @@ leapseconds:	$(LEAP_DEPS)
+ # Arguments to pass to submakes of install_data.
+ # They can be overridden by later submake arguments.
+ INSTALLARGS = \
+- BACKWARD=$(BACKWARD) \
+- DESTDIR=$(DESTDIR) \
++ BACKWARD='$(BACKWARD)' \
++ DESTDIR='$(DESTDIR)' \
+  LEAPSECONDS='$(LEAPSECONDS)' \
+  PACKRATDATA='$(PACKRATDATA)' \
+- TZDIR=$(TZDIR) \
+- YEARISTYPE=$(YEARISTYPE) \
++ TZDIR='$(TZDIR)' \
++ YEARISTYPE='$(YEARISTYPE)' \
+  ZIC='$(ZIC)'
+ 
+ # 'make install_data' installs one set of tz binary files.
+@@ -558,16 +558,16 @@ right_only:
+ # You must replace all of $(TZDIR) to switch from not using leap seconds
+ # to using them, or vice versa.
+ right_posix:	right_only
+-		rm -fr $(DESTDIR)$(TZDIR)-leaps
+-		ln -s $(TZDIR_BASENAME) $(DESTDIR)$(TZDIR)-leaps || \
+-		  $(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-leaps right_only
+-		$(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-posix posix_only
++		rm -fr '$(DESTDIR)$(TZDIR)-leaps'
++		ln -s '$(TZDIR_BASENAME)' '$(DESTDIR)$(TZDIR)-leaps' || \
++		  $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only
++		$(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only
+ 
+ posix_right:	posix_only
+-		rm -fr $(DESTDIR)$(TZDIR)-posix
+-		ln -s $(TZDIR_BASENAME) $(DESTDIR)$(TZDIR)-posix || \
+-		  $(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-posix posix_only
+-		$(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-leaps right_only
++		rm -fr '$(DESTDIR)$(TZDIR)-posix'
++		ln -s '$(TZDIR_BASENAME)' '$(DESTDIR)$(TZDIR)-posix' || \
++		  $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only
++		$(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only
+ 
+ # This obsolescent rule is present for backwards compatibility with
+ # tz releases 2014g through 2015g.  It should go away eventually.
+@@ -764,7 +764,7 @@ set-timestamps.out: $(ENCHILADA)
+ 
+ check_public:
+ 		$(MAKE) maintainer-clean
+-		$(MAKE) "CFLAGS=$(GCC_DEBUG_FLAGS)" ALL
++		$(MAKE) CFLAGS='$(GCC_DEBUG_FLAGS)' ALL
+ 		mkdir -p public.dir
+ 		for i in $(TDATA) tzdata.zi; do \
+ 		  $(zic) -v -d public.dir $$i 2>&1 || exit; \
+diff --git a/NEWS b/NEWS
+index bd2bec2..75ab095 100644
+--- a/NEWS
++++ b/NEWS
+@@ -1,5 +1,13 @@
+ News for the tz database
+ 
++Unreleased, experimental changes
++
++  Changes to build procedure
++
++    The Makefile now quotes values like BACKWARD more carefully when
++    passing them to the shell.  (Problem reported by Zefram.)
++
++
+ Release 2017c - 2017-10-20 14:49:34 -0700
+ 
+   Briefly:
+-- 
+2.13.6
+
diff --git a/SOURCES/0002-Fix-have-snprintf-error.patch b/SOURCES/0002-Fix-have-snprintf-error.patch
new file mode 100644
index 0000000..cafdf4d
--- /dev/null
+++ b/SOURCES/0002-Fix-have-snprintf-error.patch
@@ -0,0 +1,12 @@
+diff -Nrup a/Makefile b/Makefile
+--- a/Makefile	2017-10-23 18:03:40.237177646 -0400
++++ b/Makefile	2017-10-23 18:06:20.060683518 -0400
+@@ -292,7 +292,7 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fn
+ # January's first Monday when a "%V" format is used and January 1
+ # falls on a Friday, Saturday, or Sunday.
+ 
+-CFLAGS=
++CFLAGS= -DHAVE_SNPRINTF=1
+ 
+ # Linker flags.  Default to $(LFLAGS) for backwards compatibility
+ # to release 2012h and earlier.
diff --git a/SPECS/tzdata.spec b/SPECS/tzdata.spec
index fa509d7..b94ac56 100644
--- a/SPECS/tzdata.spec
+++ b/SPECS/tzdata.spec
@@ -1,8 +1,8 @@
 Summary: Timezone data
 Name: tzdata
-Version: 2017b
-%define tzdata_version 2017b
-%define tzcode_version 2017b
+Version: 2017c
+%define tzdata_version 2017c
+%define tzcode_version 2017c
 Release: 1%{?dist}
 License: Public Domain
 Group: System Environment/Base
@@ -10,6 +10,9 @@ URL: https://www.iana.org/time-zones
 Source0: ftp://ftp.iana.org/tz/releases/tzdata%{tzdata_version}.tar.gz
 Source1: ftp://ftp.iana.org/tz/releases/tzcode%{tzcode_version}.tar.gz
 
+Patch001: 0001-Fix-Makefile-quoting-bug.patch
+Patch002: 0002-Fix-have-snprintf-error.patch
+
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildRequires: gawk, glibc, perl
 BuildRequires: glibc-common >= 2.5.90-7
@@ -40,6 +43,8 @@ This package contains timezone information for use by Java runtimes.
 
 %prep
 %setup -q -c -a 1
+%patch001 -p1
+%patch002 -p1
 
 mkdir javazic
 tar zxf %{SOURCE3} -C javazic
@@ -68,6 +73,9 @@ tar xf %{SOURCE4}
 echo "%{name}%{tzdata_version}" >> VERSION
 
 %build
+# Run make to create the tzdata.zi file
+make tzdata.zi
+
 FILES="africa antarctica asia australasia europe northamerica southamerica
     pacificnew etcetera backward"
 
@@ -101,7 +109,7 @@ java -classpath javazic-1.8 build.tools.tzdb.TzdbZoneRulesCompiler \
 rm -fr $RPM_BUILD_ROOT
 install -d $RPM_BUILD_ROOT%{_datadir}
 cp -prd zoneinfo $RPM_BUILD_ROOT%{_datadir}
-install -p -m 644 zone.tab zone1970.tab iso3166.tab $RPM_BUILD_ROOT%{_datadir}/zoneinfo
+install -p -m 644 zone.tab zone1970.tab iso3166.tab leapseconds tzdata.zi $RPM_BUILD_ROOT%{_datadir}/zoneinfo
 cp -prd javazi $RPM_BUILD_ROOT%{_datadir}/javazi
 
 mkdir -p $RPM_BUILD_ROOT%{_datadir}/javazi-1.8
@@ -114,8 +122,8 @@ rm -rf $RPM_BUILD_ROOT
 %defattr(-,root,root)
 %{_datadir}/zoneinfo
 %doc README
-%doc Theory
-%doc tz-link.html
+%doc theory.html
+%doc tz-link.htm
 
 %files java
 %defattr(-,root,root)
@@ -123,6 +131,21 @@ rm -rf $RPM_BUILD_ROOT
 %{_datadir}/javazi-1.8
 
 %changelog
+* Mon Oct 23 2017 Patsy Franklin <pfrankli@redhat.com> - 2017c-1
+- Rebase to tzdata-2017c.
+  - Northern Cyprus will revert to using EQ rules on October 29, 2017.
+  - Sudan will switch from +03 to +02 on November 1, 2017.
+  - Tonga will not change it's clocks on Novemeber 5, 2017 ending it's
+    experiment with DST.
+  - Fiji DST will end on January 14, 2018 rather than January 21, 2018.
+  - Namibia - starting September 3, 2017 switches from +)1 with DST to
+    +02 all year.  This change takes effect April 1, 2018.
+  - Turks & Caicos changes from -04 all year to -05 with US DST starting
+    on March 11, 2018.  Effective change date is November 4, 2018. 
+  - tzdata now includes two text versions of the time zone data - tzdata.zi
+    and leapseconds. 
+  - Includes two patches to deal with build issues.
+
 * Mon Mar 20 2017 Patsy Franklin <pfrankli@redhat.com> - 2017b-1
 - Rebase to tzdata-2017b.
   - Haiti resumed DST on March 12, 2017.