diff --git a/libc/tzcode/tzfile.h b/libc/tzcode/tzfile.h
index 480682e..f6c9a05 100644
--- a/libc/tzcode/tzfile.h
+++ b/libc/tzcode/tzfile.h
@@ -21,7 +21,7 @@
 
 #ifndef lint
 #ifndef NOID
-static char	tzfilehid[] = "@(#)tzfile.h	8.1";
+static char tzfilehid[] = "@(#)tzfile.h 8.1";
 #endif /* !defined NOID */
 #endif /* !defined lint */
 
@@ -34,54 +34,54 @@
 #endif /* !defined TZDIR */
 
 #ifndef TZDEFAULT
-#define TZDEFAULT	"localtime"
+#define TZDEFAULT   "localtime"
 #endif /* !defined TZDEFAULT */
 
 #ifndef TZDEFRULES
-#define TZDEFRULES	"posixrules"
+#define TZDEFRULES  "posixrules"
 #endif /* !defined TZDEFRULES */
 
 /*
 ** Each file begins with. . .
 */
 
-#define	TZ_MAGIC	"TZif"
+#define TZ_MAGIC    "TZif"
 
 struct tzhead {
-	char	tzh_magic[4];		/* TZ_MAGIC */
-	char	tzh_version[1];		/* '\0' or '2' as of 2005 */
-	char	tzh_reserved[15];	/* reserved--must be zero */
-	char	tzh_ttisgmtcnt[4];	/* coded number of trans. time flags */
-	char	tzh_ttisstdcnt[4];	/* coded number of trans. time flags */
-	char	tzh_leapcnt[4];		/* coded number of leap seconds */
-	char	tzh_timecnt[4];		/* coded number of transition times */
-	char	tzh_typecnt[4];		/* coded number of local time types */
-	char	tzh_charcnt[4];		/* coded number of abbr. chars */
+    char    tzh_magic[4];       /* TZ_MAGIC */
+    char    tzh_version[1];     /* '\0' or '2' as of 2005 */
+    char    tzh_reserved[15];   /* reserved--must be zero */
+    char    tzh_ttisgmtcnt[4];  /* coded number of trans. time flags */
+    char    tzh_ttisstdcnt[4];  /* coded number of trans. time flags */
+    char    tzh_leapcnt[4];     /* coded number of leap seconds */
+    char    tzh_timecnt[4];     /* coded number of transition times */
+    char    tzh_typecnt[4];     /* coded number of local time types */
+    char    tzh_charcnt[4];     /* coded number of abbr. chars */
 };
 
 /*
 ** . . .followed by. . .
 **
-**	tzh_timecnt (char [4])s		coded transition times a la time(2)
-**	tzh_timecnt (unsigned char)s	types of local time starting at above
-**	tzh_typecnt repetitions of
-**		one (char [4])		coded UTC offset in seconds
-**		one (unsigned char)	used to set tm_isdst
-**		one (unsigned char)	that's an abbreviation list index
-**	tzh_charcnt (char)s		'\0'-terminated zone abbreviations
-**	tzh_leapcnt repetitions of
-**		one (char [4])		coded leap second transition times
-**		one (char [4])		total correction after above
-**	tzh_ttisstdcnt (char)s		indexed by type; if TRUE, transition
-**					time is standard time, if FALSE,
-**					transition time is wall clock time
-**					if absent, transition times are
-**					assumed to be wall clock time
-**	tzh_ttisgmtcnt (char)s		indexed by type; if TRUE, transition
-**					time is UTC, if FALSE,
-**					transition time is local time
-**					if absent, transition times are
-**					assumed to be local time
+**  tzh_timecnt (char [4])s     coded transition times a la time(2)
+**  tzh_timecnt (unsigned char)s    types of local time starting at above
+**  tzh_typecnt repetitions of
+**      one (char [4])      coded UTC offset in seconds
+**      one (unsigned char) used to set tm_isdst
+**      one (unsigned char) that's an abbreviation list index
+**  tzh_charcnt (char)s     '\0'-terminated zone abbreviations
+**  tzh_leapcnt repetitions of
+**      one (char [4])      coded leap second transition times
+**      one (char [4])      total correction after above
+**  tzh_ttisstdcnt (char)s      indexed by type; if TRUE, transition
+**                  time is standard time, if FALSE,
+**                  transition time is wall clock time
+**                  if absent, transition times are
+**                  assumed to be wall clock time
+**  tzh_ttisgmtcnt (char)s      indexed by type; if TRUE, transition
+**                  time is UTC, if FALSE,
+**                  transition time is local time
+**                  if absent, transition times are
+**                  assumed to be local time
 */
 
 /*
@@ -100,81 +100,81 @@
 */
 
 #ifndef TZ_MAX_TIMES
-#define TZ_MAX_TIMES	1200
+#define TZ_MAX_TIMES    1200
 #endif /* !defined TZ_MAX_TIMES */
 
 #ifndef TZ_MAX_TYPES
 #ifndef NOSOLAR
-#define TZ_MAX_TYPES	256 /* Limited by what (unsigned char)'s can hold */
+#define TZ_MAX_TYPES    256 /* Limited by what (unsigned char)'s can hold */
 #endif /* !defined NOSOLAR */
 #ifdef NOSOLAR
 /*
 ** Must be at least 14 for Europe/Riga as of Jan 12 1995,
 ** as noted by Earl Chew.
 */
-#define TZ_MAX_TYPES	20	/* Maximum number of local time types */
+#define TZ_MAX_TYPES    20  /* Maximum number of local time types */
 #endif /* !defined NOSOLAR */
 #endif /* !defined TZ_MAX_TYPES */
 
 #ifndef TZ_MAX_CHARS
-#define TZ_MAX_CHARS	50	/* Maximum number of abbreviation characters */
-				/* (limited by what unsigned chars can hold) */
+#define TZ_MAX_CHARS    50  /* Maximum number of abbreviation characters */
+                /* (limited by what unsigned chars can hold) */
 #endif /* !defined TZ_MAX_CHARS */
 
 #ifndef TZ_MAX_LEAPS
-#define TZ_MAX_LEAPS	50	/* Maximum number of leap second corrections */
+#define TZ_MAX_LEAPS    50  /* Maximum number of leap second corrections */
 #endif /* !defined TZ_MAX_LEAPS */
 
-#define SECSPERMIN	60
-#define MINSPERHOUR	60
-#define HOURSPERDAY	24
-#define DAYSPERWEEK	7
-#define DAYSPERNYEAR	365
-#define DAYSPERLYEAR	366
-#define SECSPERHOUR	(SECSPERMIN * MINSPERHOUR)
-#define SECSPERDAY	((long) SECSPERHOUR * HOURSPERDAY)
-#define MONSPERYEAR	12
+#define SECSPERMIN  60
+#define MINSPERHOUR 60
+#define HOURSPERDAY 24
+#define DAYSPERWEEK 7
+#define DAYSPERNYEAR    365
+#define DAYSPERLYEAR    366
+#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
+#define SECSPERDAY  ((long) SECSPERHOUR * HOURSPERDAY)
+#define MONSPERYEAR 12
 
-#define TM_SUNDAY	0
-#define TM_MONDAY	1
-#define TM_TUESDAY	2
-#define TM_WEDNESDAY	3
-#define TM_THURSDAY	4
-#define TM_FRIDAY	5
-#define TM_SATURDAY	6
+#define TM_SUNDAY   0
+#define TM_MONDAY   1
+#define TM_TUESDAY  2
+#define TM_WEDNESDAY    3
+#define TM_THURSDAY 4
+#define TM_FRIDAY   5
+#define TM_SATURDAY 6
 
-#define TM_JANUARY	0
-#define TM_FEBRUARY	1
-#define TM_MARCH	2
-#define TM_APRIL	3
-#define TM_MAY		4
-#define TM_JUNE		5
-#define TM_JULY		6
-#define TM_AUGUST	7
-#define TM_SEPTEMBER	8
-#define TM_OCTOBER	9
-#define TM_NOVEMBER	10
-#define TM_DECEMBER	11
+#define TM_JANUARY  0
+#define TM_FEBRUARY 1
+#define TM_MARCH    2
+#define TM_APRIL    3
+#define TM_MAY      4
+#define TM_JUNE     5
+#define TM_JULY     6
+#define TM_AUGUST   7
+#define TM_SEPTEMBER    8
+#define TM_OCTOBER  9
+#define TM_NOVEMBER 10
+#define TM_DECEMBER 11
 
-#define TM_YEAR_BASE	1900
+#define TM_YEAR_BASE    1900
 
-#define EPOCH_YEAR	1970
-#define EPOCH_WDAY	TM_THURSDAY
+#define EPOCH_YEAR  1970
+#define EPOCH_WDAY  TM_THURSDAY
 
 #define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
 
 /*
 ** Since everything in isleap is modulo 400 (or a factor of 400), we know that
-**	isleap(y) == isleap(y % 400)
+**  isleap(y) == isleap(y % 400)
 ** and so
-**	isleap(a + b) == isleap((a + b) % 400)
+**  isleap(a + b) == isleap((a + b) % 400)
 ** or
-**	isleap(a + b) == isleap(a % 400 + b % 400)
+**  isleap(a + b) == isleap(a % 400 + b % 400)
 ** This is true even if % means modulo rather than Fortran remainder
 ** (which is allowed by C89 but not C99).
 ** We use this to avoid addition overflow problems.
 */
 
-#define isleap_sum(a, b)	isleap((a) % 400 + (b) % 400)
+#define isleap_sum(a, b)    isleap((a) % 400 + (b) % 400)
 
 #endif /* !defined TZFILE_H */