diff --git a/level.go b/level.go
index 7b1004f..baf8887 100644
--- a/level.go
+++ b/level.go
@@ -3,6 +3,7 @@ package beaver
 import (
 	"fmt"
 	"strings"
+	"time"
 
 	"go.jolheiser.com/beaver/color"
 )
@@ -104,3 +105,38 @@ func ParseLevel(level string) Level {
 	}
 	return INFO
 }
+
+func timePrefix(t time.Time) string {
+	var buf = &[]byte{}
+	year, month, day := t.Date()
+	itoa(buf, int(month), 2)
+	*buf = append(*buf, '/')
+	itoa(buf, day, 2)
+	*buf = append(*buf, '/')
+	itoa(buf, year, 4)
+	*buf = append(*buf, ' ')
+
+	hour, min, sec := t.Clock()
+	itoa(buf, hour, 2)
+	*buf = append(*buf, ':')
+	itoa(buf, min, 2)
+	*buf = append(*buf, ':')
+	itoa(buf, sec, 2)
+
+	return string(*buf)
+}
+
+func itoa(buf *[]byte, i int, wid int) {
+	var b [20]byte
+	bp := len(b) - 1
+	for i >= 10 || wid > 1 {
+		wid--
+		q := i / 10
+		b[bp] = byte('0' + i - q*10)
+		bp--
+		i = q
+	}
+	// i < 10
+	b[bp] = byte('0' + i)
+	*buf = append(*buf, b[bp:]...)
+}
diff --git a/logger.go b/logger.go
index 39c096d..d586d9b 100644
--- a/logger.go
+++ b/logger.go
@@ -42,7 +42,7 @@ func (l *Logger) write(level Level, text string) {
 	if l.Level <= level {
 		var message string
 		if l.Format.TimePrefix {
-			message += color.Time.Format(time.Now().Format("01/02/2006 15:04:05")) + " "
+			message += color.Time.Format(timePrefix(time.Now())) + " "
 		}
 		if l.Format.StackPrefix {
 			_, file, line, _ := runtime.Caller(l.skip)