1 files changed, 11 insertions, 2 deletions
diff --git a/src/time/zoneinfo_read.go b/src/time/zoneinfo_read.go
index e9f1ab2ec6..22a60f3211 100644
--- a/src/time/zoneinfo_read.go
+++ b/src/time/zoneinfo_read.go
@@ -323,17 +323,26 @@ func LoadLocationFromTZData(name string, data []byte) (*Location, error) {
 		if tx[i].when <= sec && (i+1 == len(tx) || sec < tx[i+1].when) {
 			l.cacheStart = tx[i].when
 			l.cacheEnd = omega
+			zoneIdx := tx[i].index
 			if i+1 < len(tx) {
 				l.cacheEnd = tx[i+1].when
 			} else if l.extend != "" {
 				// If we're at the end of the known zone transitions,
 				// try the extend string.
-				if _, _, estart, eend, ok := tzset(l.extend, l.cacheEnd, sec); ok {
+				if name, _, estart, eend, ok := tzset(l.extend, l.cacheEnd, sec); ok {
 					l.cacheStart = estart
 					l.cacheEnd = eend
+					// Find the zone that is returned by tzset,
+					// the last transition is not always the correct zone.
+					for i, z := range l.zone {
+						if z.name == name {
+							zoneIdx = uint8(i)
+							break
+						}
+					}
 				}
 			}
-			l.cacheZone = &l.zone[tx[i].index]
+			l.cacheZone = &l.zone[zoneIdx]
 			break
 		}
 	}