diff --git a/server/server.mjs b/server/server.mjs
index 4e8299a..0f5a6d3 100644
--- a/server/server.mjs
+++ b/server/server.mjs
@@ -84,12 +84,12 @@ app.get('/api/hourly', async (req, res) => {
 
 app.get('/api/daily', async (req, res) => {
 	const {fields} = req.query;
-	const start = req.query.start || new Date(new Date().setHours(0, 0, 0, 0));
+	const start = new Date(req.query.start) || new Date(new Date().setHours(0, 0, 0, 0));
 	let now = new Date();
 	now.setHours(0, 0, 0, 0);
 	let next = new Date(now);
 	next.setDate(now.getDate() + 1);
-	const end = req.query.end || new Date();
+	const end = new Date(req.query.end) || new Date();
 	const coords = await getCoords();
 	const [sensor, meteo] = await Promise.allSettled([
 		now > start ? queryDaily(start.toISOString(), now.toISOString()) : Promise.resolve([]),