diff --git a/parseany.go b/parseany.go
index 04f084a..0d0be2f 100644
--- a/parseany.go
+++ b/parseany.go
@@ -35,8 +35,7 @@ const (
 	ST_DIGITDASHT
 	ST_DIGITDASHTZ
 	ST_DIGITDASHTZDIGIT
-	ST_DIGITDASHTDASH
-	ST_DIGITDASHTPLUS
+	ST_DIGITDASHTDELTA
 	ST_DIGITCOMMA
 	ST_DIGITCOLON
 	ST_DIGITSLASH
@@ -220,10 +219,8 @@ iterRunes:
 			// 2017-06-25T17:46:57.45706582-07:00
 			// 2017-06-25T17:46:57+04:00
 			switch {
-			case r == '-':
-				state = ST_DIGITDASHTDASH
-			case r == '+':
-				state = ST_DIGITDASHTPLUS
+			case r == '-', r == '+':
+				state = ST_DIGITDASHTDELTA
 			case r == 'Z':
 				state = ST_DIGITDASHTZ
 			}
@@ -503,27 +500,16 @@ iterRunes:
 				return time.Time{}, err
 			}
 		}
-	case ST_DIGITDASHTDASH:
-		// With another dash aka time-zone at end
-		// 2006-01-02T15:04:05.999999999-07:00
-		// 2006-01-02T15:04:05.99999999-07:00
-		// 2006-01-02T15:04:05.9999999-07:00
-		// 2006-01-02T15:04:05.999999-07:00
-		// 2006-01-02T15:04:05.99999-07:00
-		// 2006-01-02T15:04:05.9999-07:00
-		// 2006-01-02T15:04:05.999-07:00
-		// 2006-01-02T15:04:05.99-07:00
-		if t, err := time.Parse("2006-01-02T15:04:05-07:00", datestr); err == nil {
-			return t, nil
-		} else {
-			return time.Time{}, err
-		}
-	case ST_DIGITDASHTPLUS:
-		// With a plus aka time-zone at end
+	case ST_DIGITDASHTDELTA:
+		// With another +/- time-zone at end
 		// 2006-01-02T15:04:05.999999999+07:00
+		// 2006-01-02T15:04:05.999999999-07:00
 		// 2006-01-02T15:04:05.999999+07:00
+		// 2006-01-02T15:04:05.999999-07:00
 		// 2006-01-02T15:04:05.999+07:00
+		// 2006-01-02T15:04:05.999-07:00
 		// 2006-01-02T15:04:05+07:00
+		// 2006-01-02T15:04:05-07:00
 		if t, err := time.Parse("2006-01-02T15:04:05-07:00", datestr); err == nil {
 			return t, nil
 		} else {