diff --git a/lib/libc/stdtime/strptime.3 b/lib/libc/stdtime/strptime.3
--- a/lib/libc/stdtime/strptime.3
+++ b/lib/libc/stdtime/strptime.3
@@ -171,7 +171,7 @@
 The
 .Fa %Z
 format specifier only accepts time zone abbreviations of the local time zone,
-or the value "GMT".
+and the values "GMT", "UTC", or "Z".
 This limitation is because of ambiguity due to of the over loading of time
 zone abbreviations.
 One such example is
diff --git a/lib/libc/stdtime/strptime.c b/lib/libc/stdtime/strptime.c
--- a/lib/libc/stdtime/strptime.c
+++ b/lib/libc/stdtime/strptime.c
@@ -546,7 +546,8 @@
 				zonestr[cp - buf] = '\0';
 				tzset();
 				if (0 == strcmp(zonestr, "GMT") ||
-				    0 == strcmp(zonestr, "UTC")) {
+				    0 == strcmp(zonestr, "UTC") ||
+				    0 == strcmp(zonestr, "Z")) {
 				    *GMTp = 1;
 				} else if (0 == strcmp(zonestr, tzname[0])) {
 				    tm->tm_isdst = 0;