--- src/lib/libast/man/tm.3
+++ src/lib/libast/man/tm.3	2006-04-19 15:55:42.000000000 +0000
@@ -70,7 +70,7 @@ are used to determine local time zone an
 .PP
 .L time_t
 values are the number of seconds since the epoch,
-.BR "Jan 1 00:00:00 GMT 1970" ,
+.BR "Jan 1 00:00:00 UTC 1970" ,
 with leap seconds omitted.
 .PP
 The global variable
@@ -433,7 +433,7 @@ that includes the hours and minutes.
 .B z
 Time zone
 .I SHHMM
-west of GMT offset where
+west of UTC offset where
 .I S
 is
 .B +
@@ -614,7 +614,7 @@ Meridian names: AM, PM.
 .TP
 .B 43-46
 .B UTC
-time zone names: GMT, UTC, UCT, CUT.
+time zone names: UTC, GMT, UCT, CUT.
 .TP
 .B 47-50
 Daylight savings time suffix names: DST.
--- src/lib/libast/man/tmx.3
+++ src/lib/libast/man/tmx.3	2006-04-19 15:54:55.000000000 +0000
@@ -59,7 +59,7 @@ are used to determine local time zone in
 .PP
 .L time_t
 values are the number of seconds since the epoch,
-.BR "Jan 1 00:00:00 GMT 1970" ,
+.BR "Jan 1 00:00:00 UTC 1970" ,
 with leap seconds omitted.
 .PP
 The global variable
@@ -492,7 +492,7 @@ Meridian names: AM, PM.
 .TP
 .B 43-46
 .B UTC
-time zone names: GMT, UTC, UCT, CUT.
+time zone names: UTC, GMT, UCT, CUT.
 .TP
 .B 47-50
 Daylight savings time suffix names: DST.
--- src/lib/libast/tm/tmdata.c
+++ src/lib/libast/tm/tmdata.c	2006-04-19 15:52:53.000000000 +0000
@@ -54,7 +54,7 @@ static char*		format[] =
 
 	"AM",		"PM",
 
-	"GMT",		"UTC",		"UCT",		"CUT",
+	"UTC",		"GMT",		"UCT",		"CUT",
 
 	"DST",		"",		"",		"",
 
@@ -230,8 +230,8 @@ static Tm_leap_t	leap[] =
 
 static Tm_zone_t	zone[] =
 {
- 0,	"GMT",	0,	 ( 0 * 60),	     0,	/* UTC			*/
  0,	"UCT",	0,	 ( 0 * 60),	     0,	/* UTC			*/
+ 0,	"GMT",	0,	 ( 0 * 60),	     0,	/* UTC			*/
  0,	"UTC",	0,	 ( 0 * 60),	     0,	/* UTC			*/
  0,	"CUT",	0,	 ( 0 * 60),	     0,	/* UTC			*/
  0,	"Z",	0,	 ( 0 * 60),	     0,	/* UTC			*/