diff --git a/static/js/utils.js b/static/js/utils.js
index fc3aa78..1203f92 100644
--- a/static/js/utils.js
+++ b/static/js/utils.js
@@ -1,4 +1,10 @@
 const WeatherUtils = {
+    formatDatetimeLocal(date) {
+        const offsetMinutes = date.getTimezoneOffset();
+        const local = new Date(date.getTime() - offsetMinutes * 60 * 1000);
+        return local.toISOString().slice(0, 16);
+    },
+
     initializeDateInputs() {
         const now = new Date();
         const startDate = new Date(now.getTime() - 24 * 60 * 60 * 1000);
@@ -8,10 +14,10 @@ const WeatherUtils = {
         const endDateInput = document.getElementById('endDate');
 
         if (startDateInput) {
-            startDateInput.value = startDate.toISOString().slice(0, 16);
+            startDateInput.value = this.formatDatetimeLocal(startDate);
         }
         if (endDateInput) {
-            endDateInput.value = endDate.toISOString().slice(0, 16);
+            endDateInput.value = this.formatDatetimeLocal(endDate);
         }
     },