Fixed summary query.

pages/api/website/[id]/summary.js

@@ -1,6 +1,5 @@
 import { getSummary } from 'lib/db';
 import { useAuth } from 'lib/middleware';
-import { format } from 'date-fns';
 
 export default async (req, res) => {
   await useAuth(req, res);
@@ -9,8 +8,8 @@ export default async (req, res) => {
 
   const summary = await getSummary(
     +id,
-    format(new Date(+start_at), 'yyyy-MM-dd hh:mm:ss'),
-    format(new Date(+end_at), 'yyyy-MM-dd hh:mm:ss'),
+    new Date(+start_at).toISOString(),
+    new Date(+end_at).toISOString(),
   );
 
   const stats = Object.keys(summary[0]).reduce((obj, key) => {