diff --git a/pkg/moon/moon.go b/pkg/moon/moon.go
index 6d75c29..53c6bb1 100644
--- a/pkg/moon/moon.go
+++ b/pkg/moon/moon.go
@@ -12,7 +12,7 @@ import (
 
 // GET /moon
 func GetMoon(c *gin.Context) {
-	d := c.DefaultQuery("datetime", time.Now().String())
+	d := c.DefaultQuery("datetime", time.Now().Format(time.RFC3339))
 
 	lon := c.DefaultQuery("longitude", strconv.Itoa(0))
 
diff --git a/pkg/sun/sun.go b/pkg/sun/sun.go
index 5c113f8..19937b2 100644
--- a/pkg/sun/sun.go
+++ b/pkg/sun/sun.go
@@ -12,7 +12,7 @@ import (
 
 // GET Sun
 func GetSun(c *gin.Context) {
-	d := c.DefaultQuery("datetime", time.Now().String())
+	d := c.DefaultQuery("datetime", time.Now().Format(time.RFC3339))
 
 	lon := c.DefaultQuery("longitude", strconv.Itoa(0))
 
diff --git a/pkg/transit/transit.go b/pkg/transit/transit.go
index d0b2b75..36929a8 100644
--- a/pkg/transit/transit.go
+++ b/pkg/transit/transit.go
@@ -12,7 +12,7 @@ import (
 
 // GET Transit
 func GetTransit(c *gin.Context) {
-	d := c.DefaultQuery("datetime", time.Now().String())
+	d := c.DefaultQuery("datetime", time.Now().Format(time.RFC3339))
 
 	ra := c.DefaultQuery("ra", strconv.Itoa(0))