diff --git a/when/parse.go b/when/parse.go
index c18a786..ac749e4 100644
--- a/when/parse.go
+++ b/when/parse.go
@@ -137,7 +137,7 @@ func matchPeriodPattern01(base time.Time, str string) (startimer.StarTimer, erro
 			} else {
 				base.Add(time.Second * time.Duration(uint32(getNumbers(pts[8]))))
 			}
-		} else if hour != 0 {
+		} else if hour != 0 || pts[7] != "" {
 			if rpt.Every == setAsDate {
 				rpt.Repeat = append(rpt.Repeat, startimer.Repeat{Unit: startimer.STAR_SECOND, Value: 0})
 			}
diff --git a/when/parse_test.go b/when/parse_test.go
index 57a3876..3e9d479 100644
--- a/when/parse_test.go
+++ b/when/parse_test.go
@@ -9,7 +9,7 @@ import (
 func TestParse(t *testing.T) {
 	for _, code := range []string{"一个小时后告诉我事情", "三个小时后爱我", "每两个小时提醒我吃饭",
 		"每五个月零二十五天三小时25分15秒告诉我时间", "5月23日上午3点24分12秒打我", "周五上午11点提醒我", "5时25分提醒我",
-		"每周一到周五上午8点提醒我吃饭", "每天晚上8点提醒我吃饭", "每月16号晚上8点提醒我吃饭", "晚上8:30提醒我", "晚上八点半提醒我", "6分钟后提醒我"} {
+		"每周一到周五上午8点提醒我吃饭", "每天晚上8点提醒我吃饭", "每月16号晚上8点提醒我吃饭", "晚上8:30提醒我", "晚上八点半提醒我", "6分钟后提醒我", "凌晨0点半"} {
 		a, _ := WhenWithPeriod(code)
 		//fmt.Println(a.Repeats()[0])
 		fmt.Println(a.NextTimer(), a.RunCountLimit(), code)