diff --git a/gen/config.go b/gen/config.go
index d7143f4..119bf07 100644
--- a/gen/config.go
+++ b/gen/config.go
@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"github.com/alehechka/json2go/jenshared"
+	"github.com/alehechka/json2go/utils"
 )
 
 // Config presents Gen configurations.
@@ -65,45 +66,5 @@ func (c *Config) prepareOutputFileName() {
 }
 
 func (c *Config) getTimeFormat() string {
-
-	if len(c.TimeFormat) == 0 {
-		return time.RFC3339
-	}
-
-	switch c.TimeFormat {
-	case "Layout":
-		return time.Layout
-	case "ANSIC":
-		return time.ANSIC
-	case "UnixDate":
-		return time.UnixDate
-	case "RubyDate":
-		return time.RubyDate
-	case "RFC822":
-		return time.RFC822
-	case "RFC822Z":
-		return time.RFC822Z
-	case "RFC850":
-		return time.RFC850
-	case "RFC1123":
-		return time.RFC1123
-	case "RFC1123Z":
-		return time.RFC1123Z
-	case "RFC3339":
-		return time.RFC3339
-	case "RFC3339Nano":
-		return time.RFC3339Nano
-	case "Kitchen":
-		return time.Kitchen
-	case "Stamp":
-		return time.Stamp
-	case "StampMilli":
-		return time.StampMilli
-	case "StampMicro":
-		return time.StampMicro
-	case "StampNano":
-		return time.StampNano
-	default:
-		return c.TimeFormat
-	}
+	return utils.GetTimeFormat(c.TimeFormat, time.RFC3339)
 }
diff --git a/utils/timeFormat.go b/utils/timeFormat.go
new file mode 100644
index 0000000..d703e7d
--- /dev/null
+++ b/utils/timeFormat.go
@@ -0,0 +1,36 @@
+package utils
+
+import "time"
+
+// TimeFormatMap map of time formats
+var TimeFormatMap = map[string]string{
+	"Layout":      time.Layout,
+	"ANSIC":       time.ANSIC,
+	"UnixDate":    time.UnixDate,
+	"RubyDate":    time.RubyDate,
+	"RFC822":      time.RFC822,
+	"RFC822Z":     time.RFC822Z,
+	"RFC850":      time.RFC850,
+	"RFC1123":     time.RFC1123,
+	"RFC1123Z":    time.RFC1123Z,
+	"RFC3339":     time.RFC3339,
+	"RFC3339Nano": time.RFC3339Nano,
+	"Kitchen":     time.Kitchen,
+	"Stamp":       time.Stamp,
+	"StampMilli":  time.StampMilli,
+	"StampMicro":  time.StampMicro,
+	"StampNano":   time.StampNano,
+}
+
+// GetTimeFormat attempts to find a standard time format, else will return the fallback on empty strings or unaltered.
+func GetTimeFormat(format string, fallback string) string {
+	if len(format) == 0 {
+		return fallback
+	}
+
+	if standard, exists := TimeFormatMap[format]; exists {
+		return standard
+	}
+
+	return format
+}