diff --git a/convert/time.go b/convert/time.go
index f93e5c1e..dab6a9a2 100644
--- a/convert/time.go
+++ b/convert/time.go
@@ -40,13 +40,6 @@ func String2Time(s string, originalLocation *time.Location, convertedLocation *t
 		}
 		dt = dt.In(convertedLocation)
 		return &dt, nil
-	} else if len(s) >= 21 && s[10] == 'T' && s[19] == '.' && s[len(s)-3] == ':' {
-		dt, err := time.Parse(time.RFC3339, s)
-		if err != nil {
-			return nil, err
-		}
-		dt = dt.In(convertedLocation)
-		return &dt, nil
 	} else if len(s) >= 21 && s[10] == 'T' && s[19] == '.' {
 		dt, err := time.Parse(time.RFC3339, s)
 		if err != nil {
diff --git a/convert/time_test.go b/convert/time_test.go
index 52a14333..02c14867 100644
--- a/convert/time_test.go
+++ b/convert/time_test.go
@@ -18,12 +18,17 @@ func TestString2Time(t *testing.T) {
 	var kases = map[string]time.Time{
 		"2021-08-10":                          time.Date(2021, 8, 10, 8, 0, 0, 0, expectedLoc),
 		"2021-06-06T22:58:20+08:00":           time.Date(2021, 6, 6, 22, 58, 20, 0, expectedLoc),
-		"2021-06-06T22:58:20.999999999+08:00": time.Date(2021, 6, 6, 22, 58, 20, 999999999, expectedLoc),
 		"2021-06-06T22:58:20.999+08:00":       time.Date(2021, 6, 6, 22, 58, 20, 999000000, expectedLoc),
+		"2021-06-06T22:58:20.999999+08:00":    time.Date(2021, 6, 6, 22, 58, 20, 999999000, expectedLoc),
+		"2021-06-06T22:58:20.999999999+08:00": time.Date(2021, 6, 6, 22, 58, 20, 999999999, expectedLoc),
 		"2021-07-11 10:44:00":                 time.Date(2021, 7, 11, 18, 44, 0, 0, expectedLoc),
+		"2021-07-11 10:44:00.999":             time.Date(2021, 7, 11, 18, 44, 0, 999000000, expectedLoc),
+		"2021-07-11 10:44:00.999999":          time.Date(2021, 7, 11, 18, 44, 0, 999999000, expectedLoc),
+		"2021-07-11 10:44:00.999999999":       time.Date(2021, 7, 11, 18, 44, 0, 999999999, expectedLoc),
 		"2021-08-10T10:33:04Z":                time.Date(2021, 8, 10, 18, 33, 04, 0, expectedLoc),
-		"2021-08-10T10:33:04.999999999Z":      time.Date(2021, 8, 10, 18, 33, 04, 999999999, expectedLoc),
 		"2021-08-10T10:33:04.999Z":            time.Date(2021, 8, 10, 18, 33, 04, 999000000, expectedLoc),
+		"2021-08-10T10:33:04.999999Z":         time.Date(2021, 8, 10, 18, 33, 04, 999999000, expectedLoc),
+		"2021-08-10T10:33:04.999999999Z":      time.Date(2021, 8, 10, 18, 33, 04, 999999999, expectedLoc),
 	}
 	for layout, tm := range kases {
 		t.Run(layout, func(t *testing.T) {