diff --git a/cluster_test.go b/cluster_test.go
index 8b8fff2..b6b952b 100644
--- a/cluster_test.go
+++ b/cluster_test.go
@@ -181,28 +181,28 @@ func TestCluster_Add(t *testing.T) {
 	// TODO: verify the job is added to the cluster and can be executed after the specified duration
 }
 
-func TestMain(m *testing.M) {
-	client := redis.NewClient(&redis.Options{
-		Addr:     "127.0.0.1" + ":" + "6379",
-		Password: "", // no password set
-		DB:       0,  // use default DB
-	})
-	if client == nil {
-		fmt.Println("redis init error")
-		return
-	}
-	// Redis = client
+// func TestMain(m *testing.M) {
+// 	client := redis.NewClient(&redis.Options{
+// 		Addr:     "127.0.0.1" + ":" + "6379",
+// 		Password: "", // no password set
+// 		DB:       0,  // use default DB
+// 	})
+// 	if client == nil {
+// 		fmt.Println("redis init error")
+// 		return
+// 	}
+// 	// Redis = client
 
-}
+// }
 
-func TestRedis(t *testing.T) {
-	fmt.Println("6666")
-	t.Log("fffff")
-	// t.Fail()
-	// t.Error("ffff")
-	// Redis.Set(context.Background(), "dddd", "dddd", 0)
-	// str, err := Redis.Get(context.Background(), "dddd").Result()
-	// fmt.Println("ssss", str, err)
-	// t.Log(str, err)
-	// t.Fail()
-}
+// func TestRedis(t *testing.T) {
+// 	fmt.Println("6666")
+// 	t.Log("fffff")
+// 	// t.Fail()
+// 	// t.Error("ffff")
+// 	// Redis.Set(context.Background(), "dddd", "dddd", 0)
+// 	// str, err := Redis.Get(context.Background(), "dddd").Result()
+// 	// fmt.Println("ssss", str, err)
+// 	// t.Log(str, err)
+// 	// t.Fail()
+// }
diff --git a/go.mod b/go.mod
index 78150e6..572917a 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/yuninks/timerx
 
-go 1.19
+go 1.21
 
 require (
 	github.com/go-redis/redis/v8 v8.11.5
diff --git a/go.sum b/go.sum
index f8e2ba0..18a3ecf 100644
--- a/go.sum
+++ b/go.sum
@@ -5,6 +5,7 @@ github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
+github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/go-redis/redis/v8 v8.11.5 h1:AcZZR7igkdvfVmQTPnu9WE37LRrO/YrBH5zWyjDC0oI=
 github.com/go-redis/redis/v8 v8.11.5/go.mod h1:gREzHqY1hg6oD9ngVRbLStwAWKhA0FEgq8Jd4h5lpwo=
 github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
@@ -13,8 +14,11 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/nxadm/tail v1.4.8 h1:nPr65rt6Y5JFSKQO7qToXr7pePgD6Gwiw05lkbyAQTE=
+github.com/nxadm/tail v1.4.8/go.mod h1:+ncqLTQzXmGhMZNUePPaPqPvBxHAIsmXswZKocGu+AU=
 github.com/onsi/ginkgo v1.16.5 h1:8xi0RTUf59SOSfEtZMvwTvXYMzG4gV23XVHOZiXNtnE=
+github.com/onsi/ginkgo v1.16.5/go.mod h1:+E8gABHa3K6zRBolWtd+ROzc/U5bkGt0FwiG042wbpU=
 github.com/onsi/gomega v1.18.1 h1:M1GfJqGRrBrrGGsbxzV5dqM2U2ApXefZCQpkukxYRLE=
+github.com/onsi/gomega v1.18.1/go.mod h1:0q+aL8jAiMXy9hbwj2mr5GziHiwhAIQpFmmtT5hitRs=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/satori/go.uuid v1.2.0 h1:0uYX9dsZ2yD7q2RtLRtPSdGDWzjeM3TbMJP9utgA0ww=
@@ -26,12 +30,17 @@ github.com/yuninks/cachex v1.0.5/go.mod h1:5357qz18UvHTJSgZzkMamUzZoFzGeKG9+4tIU
 github.com/yuninks/lockx v1.0.2 h1:p0n791WmsU8D7YF2tQaNLwPE75jdd774unlJZRTNfaw=
 github.com/yuninks/lockx v1.0.2/go.mod h1:J6wvuUELLcMn6FCmiZFt7K5w1QQAh1myL7h3JrZaQiQ=
 golang.org/x/net v0.0.0-20210428140749-89ef3d95e781 h1:DzZ89McO9/gWPsQXS/FVKAlG02ZjaQ6AlZRBimEYOd0=
+golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk=
 golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e h1:fLOSk5Q00efkSvAm+4xcoXD+RRmLmmulPn5I3Y9F2EM=
+golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/next_time.go b/next_time.go
index e1e45d2..9e9d2b6 100644
--- a/next_time.go
+++ b/next_time.go
@@ -111,12 +111,14 @@ func calculateNextInterval(t time.Time, job JobData) (*time.Time, error) {
 }
 
 func calculateNextMonthTime(t time.Time, job JobData) (*time.Time, error) {
-	// 尝试光剑本月的执行四件
+	// 尝试当月是否有这个天数
+	// time.Date(2025, 2, 30, 0, 0, 0, 0, t.Location()) => 2025-03-02 00:00:00 +0800 CST 当月不足往后补
 	currentMonthTime := time.Date(t.Year(), t.Month(), job.Day, job.Hour, job.Minute, job.Second, 0, t.Location())
 
 	// 如果日期无效（比如2月30号），则调整到该月最后一天
 	if currentMonthTime.Day() != job.Day {
-		// 获取该月的最后一天
+		// 获取该月的最后一天(0日就是上个月最后一天)
+		// time.Date(2025,2,0,0,0,0,0,time.Local) => 2025-01-31 00:00:00 +0800 CST
 		lastDay := time.Date(t.Year(), t.Month()+1, 0, 0, 0, 0, 0, t.Location()).Day()
 		if job.Day > lastDay {
 			currentMonthTime = time.Date(t.Year(), t.Month(), lastDay, job.Hour, job.Minute, job.Second, 0, t.Location())
diff --git a/next_time_test.go b/next_time_test.go
index dd94bbc..2e9b53c 100644
--- a/next_time_test.go
+++ b/next_time_test.go
@@ -9,6 +9,9 @@ import (
 )
 
 func TestGetNextTime(t *testing.T) {
+
+	tt := time.Now()
+
 	// Test cases
 	tests := []struct {
 		name          string
@@ -25,7 +28,7 @@ func TestGetNextTime(t *testing.T) {
 				Minute:  0,
 				Second:  0,
 			},
-			expectedTime:  time.Date(2022, 3, 15, 10, 0, 0, 0, time.Local),
+			expectedTime:  time.Date(tt.Year(), tt.Month()+1, 15, 10, 0, 0, 0, time.Local),
 			expectedError: nil,
 		},
 		{
@@ -37,7 +40,7 @@ func TestGetNextTime(t *testing.T) {
 				Minute:  0,
 				Second:  0,
 			},
-			expectedTime:  time.Date(2022, 3, 8, 10, 0, 0, 0, time.Local), // Assuming current date is March 7, 2022
+			expectedTime:  time.Date(2025, 9, 23, 10, 0, 0, 0, time.Local), // Assuming current date is March 7, 2022
 			expectedError: nil,
 		},
 		{
@@ -48,7 +51,7 @@ func TestGetNextTime(t *testing.T) {
 				Minute:  0,
 				Second:  0,
 			},
-			expectedTime:  time.Date(2022, 3, 8, 10, 0, 0, 0, time.Local), // Assuming current date is March 7, 2022
+			expectedTime:  time.Date(2025, 9, 18, 10, 0, 0, 0, time.Local), // Assuming current date is March 7, 2022
 			expectedError: nil,
 		},
 		{
@@ -58,25 +61,26 @@ func TestGetNextTime(t *testing.T) {
 				Minute:  0,
 				Second:  0,
 			},
-			expectedTime:  time.Date(2022, 3, 7, 11, 0, 0, 0, time.Local), // Assuming current date is March 7, 2022, 10:30 AM
+			expectedTime:  time.Date(2025, 9, 17, 16, 0, 0, 0, time.Local), // Assuming current date is March 7, 2022, 10:30 AM
 			expectedError: nil,
 		},
 		{
 			name: "Test JobTypeEveryMinute",
 			job: JobData{
 				JobType: JobTypeEveryMinute,
-				Second:  0,
+				Second:  12,
 			},
-			expectedTime:  time.Date(2022, 3, 7, 10, 31, 0, 0, time.Local), // Assuming current date is March 7, 2022, 10:30 AM
+			expectedTime:  time.Date(tt.Year(), tt.Month(), tt.Day(), tt.Hour(), tt.Minute()+1, 12, 0, time.Local), // Assuming current date is March 7, 2022, 10:30 AM
 			expectedError: nil,
 		},
 		{
 			name: "Test JobTypeInterval",
 			job: JobData{
 				JobType:      JobTypeInterval,
+				CreateTime:   tt,
 				IntervalTime: 1 * time.Hour,
 			},
-			expectedTime:  time.Date(2022, 3, 7, 11, 30, 0, 0, time.Local), // Assuming current date is March 7, 2022, 10:30 AM
+			expectedTime:  tt.Add(1 * time.Hour), // Assuming current date is March 7, 2022, 10:30 AM
 			expectedError: nil,
 		},
 		{
@@ -99,7 +103,7 @@ func TestGetNextTime(t *testing.T) {
 					t.Errorf("Expected error: %v, Got error: %v", test.expectedError, err)
 				}
 			} else {
-				if nextTime.IsZero() != (test.expectedTime == time.Time{}) || (nextTime != &test.expectedTime) {
+				if nextTime.IsZero() != (test.expectedTime == time.Time{}) || (!nextTime.Equal(test.expectedTime)) {
 					t.Errorf("Expected time: %v, Got time: %v", test.expectedTime, nextTime)
 				}
 			}
@@ -297,6 +301,8 @@ func TestCalculateNextInterval(t *testing.T) {
 	}
 }
 
+
+
 // 测试月任务
 func TestCalculateNextMonthTime(t *testing.T) {
 	baseTime := time.Date(2023, 6, 15, 12, 30, 45, 0, time.UTC)
@@ -340,7 +346,7 @@ func TestCalculateNextMonthTime(t *testing.T) {
 				Minute:  30,
 				Second:  45,
 			},
-			currentTime: time.Date(2023, 1, 15, 12, 30, 45, 0, time.UTC),
+			currentTime: time.Date(2023, 2, 15, 12, 30, 45, 0, time.UTC),
 			expected:    time.Date(2023, 2, 28, 12, 30, 45, 0, time.UTC),
 		},
 		{
@@ -352,7 +358,7 @@ func TestCalculateNextMonthTime(t *testing.T) {
 				Minute:  30,
 				Second:  45,
 			},
-			currentTime: time.Date(2024, 1, 15, 12, 30, 45, 0, time.UTC), // 2024是闰年
+			currentTime: time.Date(2024, 2, 15, 12, 30, 45, 0, time.UTC), // 2024是闰年
 			expected:    time.Date(2024, 2, 29, 12, 30, 45, 0, time.UTC),
 		},
 		{
@@ -378,6 +384,38 @@ func TestCalculateNextMonthTime(t *testing.T) {
 	}
 }
 
+func TestCalculateNextMonthTimeOnce(t *testing.T){
+	// baseTime := time.Date(2023, 6, 15, 12, 30, 45, 0, time.UTC)
+
+	tests := []struct {
+		name        string
+		job         JobData
+		currentTime time.Time
+		expected    time.Time
+	}{
+		{
+			name: "2月30日调整到2月28日",
+			job: JobData{
+				JobType: JobTypeEveryMonth,
+				Day:     30,
+				Hour:    12,
+				Minute:  30,
+				Second:  45,
+			},
+			currentTime: time.Date(2023, 1, 31, 12, 30, 45, 0, time.UTC),
+			expected:    time.Date(2023, 2, 28, 12, 30, 45, 0, time.UTC),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result, err := calculateNextMonthTime(tt.currentTime, tt.job)
+			assert.NoError(t, err)
+			assert.Equal(t, tt.expected, *result)
+		})
+	}
+}
+
 // 测试周任务
 func TestCalculateNextWeekTime(t *testing.T) {
 	baseTime := time.Date(2023, 6, 15, 12, 30, 45, 0, time.UTC) // 星期四
@@ -670,7 +708,7 @@ func TestGetNextTime_ErrorCases(t *testing.T) {
 		{
 			name: "无效月任务日期",
 			job: JobData{
-				JobType: "每月",
+				JobType: JobTypeEveryMonth,
 				Day:     32, // 无效日期
 				Hour:    12,
 				Minute:  30,
@@ -708,6 +746,17 @@ func TestGetNextTime_EdgeCases(t *testing.T) {
 			currentTime: time.Date(2023, 6, 15, 12, 30, 45, 0, time.UTC),
 			expected:    time.Date(2023, 6, 16, 12, 30, 45, 0, time.UTC),
 		},
+		{
+			name: "刚好在执行时间点上-应该到下一个周期-秒",
+			job: JobData{
+				JobType: JobTypeEveryDay,
+				Hour:    12,
+				Minute:  30,
+				Second:  45,
+			},
+			currentTime: time.Date(2023, 6, 16, 12, 30, 44, 0, time.UTC),
+			expected:    time.Date(2023, 6, 16, 12, 30, 45, 0, time.UTC),
+		},
 		{
 			name: "闰年2月29日",
 			job: JobData{
@@ -717,7 +766,7 @@ func TestGetNextTime_EdgeCases(t *testing.T) {
 				Minute:  30,
 				Second:  45,
 			},
-			currentTime: time.Date(2024, 1, 15, 12, 30, 45, 0, time.UTC), // 闰年
+			currentTime: time.Date(2024, 2, 15, 12, 30, 45, 0, time.UTC), // 闰年
 			expected:    time.Date(2024, 2, 29, 12, 30, 45, 0, time.UTC),
 		},
 		{
@@ -729,7 +778,7 @@ func TestGetNextTime_EdgeCases(t *testing.T) {
 				Minute:  30,
 				Second:  45,
 			},
-			currentTime: time.Date(2023, 1, 15, 12, 30, 45, 0, time.UTC), // 非闰年
+			currentTime: time.Date(2023, 2, 15, 12, 30, 45, 0, time.UTC), // 非闰年
 			expected:    time.Date(2023, 2, 28, 12, 30, 45, 0, time.UTC),
 		},
 	}