diff --git a/src/time/example_test.go b/src/time/example_test.go
index 4d70471a7d..2f890db2f4 100644
--- a/src/time/example_test.go
+++ b/src/time/example_test.go
@@ -363,6 +363,7 @@ func ExampleParse() {
 func ExampleParseInLocation() {
 	loc, _ := time.LoadLocation("Europe/Berlin")
 
+	// This will look for the name CEST in the Europe/Berlin time zone.
 	const longForm = "Jan 2, 2006 at 3:04pm (MST)"
 	t, _ := time.ParseInLocation(longForm, "Jul 9, 2012 at 5:02am (CEST)", loc)
 	fmt.Println(t)
diff --git a/src/time/time.go b/src/time/time.go
index 0d1cb9e5a1..10a132fa23 100644
--- a/src/time/time.go
+++ b/src/time/time.go
@@ -257,7 +257,7 @@ func (t Time) Before(u Time) bool {
 
 // Equal reports whether t and u represent the same time instant.
 // Two times can be equal even if they are in different locations.
-// For example, 6:00 +0200 CEST and 4:00 UTC are Equal.
+// For example, 6:00 +0200 and 4:00 UTC are Equal.
 // See the documentation on the Time type for the pitfalls of using == with
 // Time values; most code should use Equal instead.
 func (t Time) Equal(u Time) bool {
diff --git a/src/time/zoneinfo.go b/src/time/zoneinfo.go
index 7dffbfad5e..e6cac620fb 100644
--- a/src/time/zoneinfo.go
+++ b/src/time/zoneinfo.go
@@ -14,7 +14,8 @@ import (
 
 // A Location maps time instants to the zone in use at that time.
 // Typically, the Location represents the collection of time offsets
-// in use in a geographical area, such as CEST and CET for central Europe.
+// in use in a geographical area. For many Locations the time offset varies
+// depending on whether daylight savings time is in use at the time instant.
 type Location struct {
 	name string
 	zone []zone
@@ -34,7 +35,7 @@ type Location struct {
 	cacheZone  *zone
 }
 
-// A zone represents a single time zone such as CEST or CET.
+// A zone represents a single time zone such as CET.
 type zone struct {
 	name   string // abbreviated name, "CET"
 	offset int    // seconds east of UTC