diff --git a/README.md b/README.md
new file mode 100644
index 0000000..3a879ff
--- /dev/null
+++ b/README.md
@@ -0,0 +1,5 @@
+# Commit Day
+
+你是不是跟 [@YamiOdymel](https://github.com/YamiOdymel) 一樣，懶的在做完某些事情的當下就直接 Commit 呢？但如果之後達到某個進度才全部一起 Commit 的話就會失去了你在 GitHub 的 Commit 連續紀錄，到底該怎麼辦呢？
+
+這個時候 Commit Day 就是你的好朋友！Commit Day 會在你 Commit 完所有檔案後，掃描這些檔案的最後變更日期，並以該日期作為 Commit 的日期（而不是你 Commit 當下的時間）！這意味著你終於可以在今天以之前的日期 Commit 那些以往的變更了！
\ No newline at end of file
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..b82f7c9
--- /dev/null
+++ b/main.go
@@ -0,0 +1,143 @@
+package main
+
+import (
+	"fmt"
+	. "fmt"
+	"os"
+	"os/exec"
+	"regexp"
+	"time"
+)
+
+func main() {
+	var c []commitBox
+
+	app := "git"
+
+	arg0 := "log"
+	arg1 := "--branches"
+	arg2 := "--not"
+	arg3 := "--remotes"
+
+	cmd := exec.Command(app, arg0, arg1, arg2, arg3)
+	stdout, err := cmd.Output()
+
+	if err != nil {
+		Println(err.Error())
+		return
+	}
+
+	//Print()
+
+	commitRegexp := regexp.MustCompile(`commit (.*)\nAuthor: (.*)\nDate:   (.*)\n\n    (.*)`)
+	commits := commitRegexp.FindAllStringSubmatch(string(stdout), -1)
+
+	for _, commit := range commits {
+		id := commit[1]
+		//author := commit[2]
+		date := commit[3]
+		message := commit[4]
+
+		app := "git"
+
+		arg0 := "show"
+		arg1 := id
+
+		cmd := exec.Command(app, arg0, arg1)
+		stdout, err := cmd.Output()
+
+		if err != nil {
+			Println(err.Error())
+			return
+		}
+
+		diffRegexp := regexp.MustCompile(`diff --git a\/(.*) b\/(.*)`)
+		diffs := diffRegexp.FindAllStringSubmatch(string(stdout), -1)
+
+		var srcs []string
+		var lastTime time.Time
+		for _, diff := range diffs {
+			src := diff[1]
+
+			file, err := os.Stat(src)
+
+			if err != nil {
+				fmt.Println(err)
+			}
+
+			//Printf("%s, %s, %s, %s\n", id, src, file.ModTime(), message)
+
+			if lastTime.Before(file.ModTime()) {
+				lastTime = file.ModTime()
+			}
+			srcs = append(srcs, src)
+		}
+
+		c = append(c, commitBox{
+			files:   srcs,
+			message: message,
+			oldDate: date,
+			newDate: lastTime.Format("Mon Jan 2 15:04:05 2006 -0700"),
+		})
+	}
+
+	app = "git"
+
+	arg0 = "reset"
+	arg1 = "origin/master"
+
+	cmd = exec.Command(app, arg0, arg1)
+	stdout, err = cmd.Output()
+
+	if err != nil {
+		Println(err.Error())
+		return
+	}
+
+	//Println(string(stdout))
+
+	for _, v := range c {
+
+		app := "git"
+		argAdd := []string{"add"}
+
+		for _, k := range v.files {
+			argAdd = append(argAdd, k)
+		}
+
+		cmd := exec.Command(app, argAdd...)
+		_, err := cmd.Output()
+
+		if err != nil {
+			Println(err.Error())
+			return
+		}
+		//Println(string(stdout))
+
+		app = "git"
+		arg0 := "commit"
+		arg1 := "-m"
+		arg2 := Sprintf(`%s`, v.message)
+		arg3 := "--date"
+		arg4 := Sprintf(`"%s"`, v.newDate)
+
+		cmd = exec.Command(app, arg0, arg1, arg2, arg3, arg4)
+		stdout, err = cmd.Output()
+
+		if err != nil {
+			Println(err.Error())
+			return
+		}
+		//Println(string(stdout))
+
+		Printf("%s, %s, %s -> %s\n", v.files, v.message, v.oldDate, v.newDate)
+	}
+
+}
+
+type commitBox struct {
+	files   []string
+	message string
+	oldDate string
+	newDate string
+}