diff --git a/op_time/time.go b/op_time/time.go
index cb4db16..bfa75ae 100644
--- a/op_time/time.go
+++ b/op_time/time.go
@@ -110,3 +110,7 @@ func (t *Time) getTimeFormat(defaultFormat string, layout ...string) string {
 func DefaultZeroTime() time.Time {
 	return time.Date(1970, 1, 1, 0, 0, 0, 0, time.Local)
 }
+
+func IsZeroTime(t time.Time) bool {
+	return t.IsZero() || t.Year() == 1970
+}